GE VersaPoint IC220ALG221 System Manual

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Page 1

VERSA POINT I/O MODULE

ANALOG IN 15 BIT VOLTAGE/CURRENT 8CH IC220ALG221

6226B_GE

This data sheet is only valid in association with the System Manual.

09/2002

Function

The terminal is designed for use within an VersaPoint station. It is used to measure analog voltage or current signals.

Features

– Eight analog single-ended signal inputs for

the connection of either voltage or current signals

– Sensors are connected using 2-wire techno-

logy

– Various current and voltage measuring ran-

ges

– Channels are configured independently of

one another using the bus

– Measured values can be represented in five

different formats – 16-bit analog-to-digital converter – Process data multiplex operation – Diagnostic indicators

6 2 2 6 0 0 0 1

6 2 2 6 A 0 0 2

Figure 1 The ANALOG IN 15 BIT VOLTAGE/

CURRENT 8CH terminal with connectors

Please note that the connectors are not supplied as standard with the terminal. Please refer to the ordering data on page 45 to order the appropriate connectors for your application.

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ANALOG IN 15 BIT VOLTAGE/CURRENT 8CH IC220ALG221

Local Diagnostic Indicators and Terminal Assignment

Local Diagnostic Indicators

A I 8 / S F

1 2

1 . 1

1 . 2

1 . 3

1 . 4

2 . 1

2 . 2

2 . 3

2 . 4

6 2 2 6 A 0 0 3

Figure 2 The ANALOG IN 15 BIT VOLTAGE/

CURRENT 8CH terminal with an appropriate connector

Des. Color Meaning

D Green Bus diagnostics

Terminal Assignment for Each Connector

Terminal

Signal Assignment

Points

1.1 +U1 Voltage input channel 1

2.1 +U2 Voltage input channel 2

1.2 +I1 Current input channel 1

2.2 +I2 Current input channel 2

1.3, 2.3 -1, -2 Minus input (for both cur-

rent and voltage)

1.4, 2.4 Shield Shield connection

Installation Instructions

High current flowing through potential jumpers UM and US causes the temperature of the potential jumpers and the internal temperature of the terminal to increase. Observe the following instructions to keep the current flowing through the potential jumpers of the analog terminals as low as possible:

All of the analog terminals need a separate main circuit.

If this is not possible in your application and if you are using analog terminals in a main circuit together with other terminals, place the analog terminals behind all the other terminals at the end of the main circuit.

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Internal Circuit Diagram

ANALOG IN 15 BIT VOLTAGE/CURRENT 8CH IC220ALG221

I N T E R B U S

L +

A N A

L -

2 4 V

5 V

R E F

2 2

+ 2 4 V ( U

+ 2 4 V ( UM)

I N 1

)

I N 1

I N 2

I N 3

Figure 3 Internal wiring of the terminal points

Key:

OPC

Protocol chip

I N 4

O P C

µ P

M U X

2 2

E E P R O M

S U P E R

I N 5

I N 6

I N 7

I N 8

6 2 2 6 A 0 0 4

x x x

X X X

Power supply unit with electrical isolation

R E F

Amplifier

M U X

µ P

E E P R O M

S U P E R

Optocoupler Reference voltage source

Microprocessor Analog-to-digital converter

Electrically erasable, reprogrammable read-only memory

Microprocessor monitoring Multiplexer

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ANALOG IN 15 BIT VOLTAGE/CURRENT 8CH IC220ALG221

Electrical Isolation

I N T E R B U S l o c a l b u s ( I N ) U

( 7 . 5 V D C )

( 2 4 V D C )

A N A

B u s i n t e r f a c e O P C a n d

m i c r o p r o c e s s o r

2 4 V

5 V

i n t e r f a c e

A n a l o g i n p u t sF E p o t e n t i a l

I / O

I N T E R B U S l o c a l b u s ( O U T )

( 7 . 5 V D C )

( 2 4 V D C )

A N A

E l e c t r i c a l i s o l a t i o n b e t w e e n a r e a A a n d

6 2 2 6 0 0 0 5

Figure 4 Electrical isolation of the individual

function areas

Connection Notes

Do not simultaneously apply current and voltage signals to one input channel as you will not obtain valid measured values.

Do not connect voltages above ±2.5 V to a current input. The electronics module will be damaged if the maximum permissible current of ±100 mA is exceeded.

Always connect the analog sensors using shielded, twisted-pair cables. Connect the shielding to the VersaPoint terminal using the shield clamp. The clamp con-

nects the shield directly to FE (functional earth ground) on the terminal side. Additional wiring is not required.

Isolate the shielding at the sensor or connect it with a high resistance and a capacitor to the PE potential.

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ANALOG IN 15 BIT VOLTAGE/CURRENT 8CH IC220ALG221

Connection Examples

Observe the connection notes on page 4.

Figure 5 shows the connection schematically (without shield connector).

Connection of Active Sensors

S l o t C h a n n e l 1 2 3 4 5 6 7 8

A I 8 S F

1 2

3 4

1 2

Programming Data

ID code 5F Length code 02 Process data channel 32 bits Input address area 4 bytes Output address area 4 bytes Parameter channel (PCP) 0 bytes Register length (bus) 4 bytes

hex

(95

dec

)

I N

V o l t a g e s e n s o r t o

c h a n n e l 1

C u r r e n t s e n s o r t

c h a n n e l 8

I N

Figure 5 Connection of active sensors using

2-wire technology with shield connection

The sensors have the same reference potential.

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ANALOG IN 15 BIT VOLTAGE/CURRENT 8CH IC220ALG221

Process Data Words

Process Data Output Words for the Configuration of the Terminal (see page 7)

Process Data Output Word 0 (OUT[0]) Process Data Output Word 1 (OUT[1])

Byte 0Byte 1Byte 2Byte 3

OUT[0]

(Byte.bit) view

Byte Byte 0 Byte 1 Bit 7654321076543210 Assignment 0

Byte Bit 7654321076543210 Assignment 000000

Command 00000000

OUT[1]

Byte 2 Byte 3

Filter 0 Format Measuring

range

Process Data Input Words (see page 11)

Process Data Input Word 0 (IN[0]) Process Data Input Word 1 (IN[1])

Byte 0Byte 1Byte 2Byte 3

IN[0]

(Byte.bit) view

6 6226B_GE

Byte Bit 7654321076543210 Assignment 1514131211109876543210

Byte 0 Byte 1

Depends on the command

IN[1]

Byte 2 Byte 3

Depends on the command

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ANALOG IN 15 BIT VOLTAGE/CURRENT 8CH IC220ALG221

Process Data Output Words OUT[0] and OUT[1]

The terminal must be configured using the two process data output words. The word OUT[0] contains the command and the word OUT[1] contains the parameters for this command.

The following configurations are possible: – Selecting a measuring range according to

the input signal – Selecting the mean-value generation (filte-

ring) – Changing the formats for the representation

of measured values

Current or voltage measurement is selected by applying the measured signal to the current or voltage input and then configuring the measuring range.

O U T [ 0 ] O U T [ 1 ]

M S B L S B

1 5

After applying voltage (power up) to the VersaPoint station, the message "Measured value invalid" (diagnostic code 8004

) appears in the process

hex

data input words for every channel scanned. The message is displayed until the appropriate channel has been configured.

If the configuration is changed, the message "Measured value invalid" (diagnostic code 8004

) appears for

hex

a maximum of 100 ms.

Please note the extended runtime when a channel is configured for the first time and every time a channel is reconfigured.

01 4 1 3 1 2 1 1 1 0 9 8 7 6 5 4 3 2 1

R e s e r v e d ( 0 0 0 0 0 0

M S B L S B

1 5

C o m m a n d

)

b i n

R e s e r v e d ( 0 0 0 0 0 0 0 0

F i l t e r

R e s e r v e d ( 0 )

F o r m a t M e a s u r i n g r a n g e

01 4 1 3 1 2 1 1 1 0 9 8 7 6 5 4 3 2 1

)R e s e r v e d ( 0 )

b i n

6 2 2 6 A 0 0 7

Figure 6 Process data output words

MSB Most significant bit LSB Least significant bit

Set all reserved bits to 0.

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ANALOG IN 15 BIT VOLTAGE/CURRENT 8CH IC220ALG221

OUT[0] (Command Code)

OUT[0] Bit 1514131211109876543210 Assignment 0

Command 00000000

Bit 15 to bit 8 (command):

Bit 15 to Bit 8 OUT[0] Command Function

0 0 0 0 Z2Z1Z00x00 0 0 1 0 Z2Z1Z01x00

0 0 0 1 1 1 1 0 03C00 0

1 0 0 0 Z2Z1Z04x00

1 0 1 0 Z2Z1Z05x00

1 1 0 0 0 0 0 6000

0 0

1 1 1 0 Y Y1Y07x00

Read measured value of channel x

hex

Read configuration of channel x

hex

Read firmware version and module identification

hex

Configure channel x

hex

Configure channel x and read measured value of

hex

channel x Configure entire terminal (all channels)

hex

Commands for groups without mirroring

hex

Z2Z1Z0Channel number Y

2Y1Y0

Group number

OUT[0] Bit 1514131211109876543210 Assignment 0 Channel/group 0 X X X X

Bit 10 to bit 8 (channel number Z

Command 00000000

X X X00000000

or group number Y2Y1Y0):

2Z1Z0

Code Channel Code Group

bin dec bin dec

000 0 1 000 0 4 x 8-bit group A (channel 1, 2, 3, and 4) 001 1 2 001 1 4 x 8-bit group B (channel 5, 6, 7, and 8) 010 2 3 010 2 Reserved 011 3 4 011 3 Reserved 100 4 5 100 4 2 x 16-bit group A (channel 1 and 2) 101 5 6 101 5 2 x 16-bit group B (channel 3 and 4) 110 6 7 110 6 2 x 16-bit group C (channel 5 and 6) 111 7 8 111 7 2 x 16-bit group D (channel 7 and 8)

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OUT[1] (Parameter Word)

ANALOG IN 15 BIT VOLTAGE/CURRENT 8CH IC220ALG221

The parameters for the commands 4x00

hex

, 5x00

, and 6000

hex

must be specified in OUT[1]. This

hex

parameter word is only evaluated for these commands.

OUT[1] Bit 151413121110 9 8 7 6 5 4 3 2 1 0 Assignment 000000

Filter 0 Format Measuring range

If invalid parameters are specified in the parameter word, the command will not be executed. The command is confirmed in the input words with the set error bit.

Bit 9 and bit 8:

Code Filter (Filtering by Mean-Value Generation)

bin dec

00 0 16-sample average (default)

01 1 No mean-value generation 10 2 4-sample average 11 3 32-sample average

Bit 6 to bit 4:

Code Format bin dec 000 0 IB IL (15 bits) (default)

001 1 IB ST (12 bits) 010 2 IB RT (15 bits) 011 3 Standardized display 100 4 PIO (for the 4 mA to 20 mA range only) 101 5

Reserved110 6

111 7

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ANALOG IN 15 BIT VOLTAGE/CURRENT 8CH IC220ALG221

Bit 3 to bit 0:

Code Measuring Range (Voltage)

bin dec

0000 0 0 V to 10 V (default)

0001 1 ±10 V 0010 2 0 V to 5 V 0011 3 ±5 V 0100 4 0 V to 25 V 0101 5 ±25 V 0110 6 0 V to 50 V 0111 7 Reserved

The differential voltage between different terminal inputs must not exceed 50 V.

If, for example, the 0 V to 50 V range is used on one channel, the use of bipolar ranges is

not permitted on any other channel.

Code Measuring Range (Current)

bin dec

1000 8 0 mA to 20 mA

1001 9 ±20 mA 1010 10 4 mA to 20 mA 1011 11 Reserved 1100 12 0 mA to 40 mA 1101 13 ±40 mA 1110 14 Reserved 1111 15 Reserved

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ANALOG IN 15 BIT VOLTAGE/CURRENT 8CH IC220ALG221

Process Data Input Words IN[0] and IN[1]

The measured values and diagnostic messages (diagnostic codes) are transmitted to the controller board or computer using the two process data input words. The contents of the words vary according to the command.

IN[0] and IN[1] for Commands 0x00

to 6000

hex

I N [ 0 ] I N [ 1 ]

M S B L S B

1 5

R e s u l t

M S B L S B

1 5

M i r r o r i n g o f t h e c o m m a n d c o d e

E r r o r b i t

0 0 0 0 0 0 0 0

b i n

01 4 1 3 1 2 1 1 1 0 9 8 7 6 5 4 3 2 1

6 2 2 6 A 0 0 8

Figure 7 Process data input words

IN[0]

The output word OUT[0], which contains the command code, is mirrored in the input word IN[0]. This confirms that the command has been executed correctly. If the command was not executed correctly, the error bit is set in bit 15 of the input word IN[0].

The error bit is set if one of the following reasons (see page 29):

– There is no valid configuration for the channel scanned – There was an invalid parameter during configuration – A reserved bit was set

The command is only mirrored if it has been executed completely. That means, for example, that the 5x00

6226B_GE 11

command is only mirrored after the value has been read and not after reconfiguration.

hex

Page 12

ANALOG IN 15 BIT VOLTAGE/CURRENT 8CH IC220ALG221

IN[1]

The input word IN[1] varies depending on the command. IN[1] contains the firmware version and module identification for the 3C00

command.

hex

IN[1] Bit 1514131211109876543210 Assignment

Firmware version Module ID Example: 123

hex

Terminal equipped with firmware version 1.23

For the commands 1x00

hex

, 4x00

, and 6000

hex

, IN[1] contains the mirroring of the specified con-

hex

figuration.

IN[1] Bit 1514131211109876543210 Assignment 0 0 0 0 0 0

Filter 0 Format Measuring range

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ANALOG IN 15 BIT VOLTAGE/CURRENT 8CH IC220ALG221

For the 0x00

and 5x00

hex

commands, IN[1] contains the analog measured value.

hex

IN[1] Bit 151413121110 9 8 7 6 5 4 3 2 1 0 Assignment Measured value in the appropriate format

01 4 1 3 1 2 1 1 1 0 9 8 7 6 5 4 3 2 11 5

O R0 / 4 O C

01 4 1 3 1 2 1 1 1 0 9 8 7 6 5 4 3 2 11 5

F o r m a t : I B I L

I B R T

S t a n d a r d i z e d d i s p l a y

I B S T

P I O

6 2 2 6 A 0 1 0

M S B L S B

S B

A V

Figure 8 Representation of the measured values in the different formats

SB Sign bit OC Open circuit AV Analog value OR Overrange 0/4 4 to 20 mA measuring range MSB Most significant bit LSB Least significant bit

The individual formats are explained in the Section „Formats for Representation of Measured Values“ auf Seite 16.

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ANALOG IN 15 BIT VOLTAGE/CURRENT 8CH IC220ALG221

IN[0] and IN[1] for the Group-Commands 7x00

hex

I N [ 0 ] I N [ 1 ]

M S B L S B

1 5

R e s u l t

M S B L S B

1 5

R e s u l t

01 4 1 3 1 2 1 1 1 0 9 8 7 6 5 4 3 2 1

6 2 2 6 A 0 1 3

Figure 9 Process data input words

For the group commands 7x00

, both input words contain the measured values of the channels that

hex

correspond with the group command.

Group Commands for Two 16-bit Channels: 7400

hex

, 7500

hex

, 7600

, and 7700

hex

With commands for two 16-bit channels, the analog value of one channel is mapped to every input word. The display corresponds with the display in the input word IN[1] for the 0x00

and 5x00

hex

commands.

Example 2 x 16-Bit Group A (Channels 1 and 2): 7400

Command

hex

IN[0] Bit 1514131211109876543210 Assignment

16-bit measured value channel 1 in the appropriate format

IN[1] Bit 1514131211109876543210 Assignment

16-bit measured value channel 2 in the appropriate format

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ANALOG IN 15 BIT VOLTAGE/CURRENT 8CH IC220ALG221

Group Commands for Four 8-bit Channels: 7000

and 7100

hex

With commands for four channels, the analog values for two channels are mapped to every input word. The measured value for each channel is represented in eight bits. This measured value corresponds to bits 15 to 8 in the format displays of a 16-bit value.

Example 4 x 8-Bit Group A (Channels 1, 2, 3, and 4): 7000

Command

hex

IN[0] Bit 151413121110 9 8 7 6 5 4 3 2 1 0 Assignment

8-bit measured value channel 1

in the appropriate format

8-bit measured value channel 2

in the appropriate format

IN[0] Bit 151413121110 9 8 7 6 5 4 3 2 1 0 Assignment

8-bit measured value channel 3

in the appropriate format

8-bit measured value channel 4

in the appropriate format

The status bits in "IB ST" format and the diagnostic messages in "IB IL" and "standardized display" format are not displayed in this configuration.

6226B_GE 15

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ANALOG IN 15 BIT VOLTAGE/CURRENT 8CH IC220ALG221

Formats for Representation of Measured Values

To ensure that the terminal can be operated in previously used data formats, the measured value representation can be switched to different formats. The "IB IL" format is the default.

Abbreviations used in the following tables: OR Overrange

UR Under range

"IB IL" Format

The measured value is represented in bits 14 to 0. An additional bit (bit 15) is available as a sign bit. This format supports extended diagnostics. Values > 8000

and < 8100

hex

indicate an error.

hex

The following diagnostic codes are possible:

Code (hex) Error

8001 Overrange 8002 Open circuit 8004 Measured value invalid/no valid measured value avai-

lable (e.g., because the channel was not configured) 8010 Configuration invalid 8020 I/O supply voltage faulty 8040 Module faulty 8080 Under range

Measured value representation in "IB IL" format (15 bits)

1514131211109876543210 SB Analog value

SB Sign bit

16 6226B_GE

Page 17

Significant Measured Values Voltage Ranges

ANALOG IN 15 BIT VOLTAGE/CURRENT 8CH IC220ALG221

Input Data Word

(Two’s Complement)

0V to 5 V

0 V to 10 V

0 V to 25 V

0 V to 50 V

hex dec V V V V

8001 OR >

+5.419 > +10.837 > +27.093 > +54.187

7F00 32512 +5.419 +10.837 +27.093 +54.187

7530 30000 +5.0 +10.0 +25.0 +50.0

0001 1 +166.67 µV +333.33 µV +833.33 µV +1.6667 mV

00000 0000

00000< 0<0<0<0

Input Data Word

(Two’s Complement)

±5 V

±10 V

±25 V

hex dec V V V

8001 OR > +5.419 >

+10.837 > +27.093

7F00 32512 +5.419 +10.837 +27.093

7530 30000 +5.0 +10.0 +25.0

0001 1 +166.67 µV +333.33 µV +833.33 µV

0000 0 0 0 0

FFFF 0 -166.67 µV -333.33 µV -833.33 µV

8AD0 -30000 -5.0 -10.0 -25.0

8100 -32512 -5.419 -10.837 -27.093 8080 UR < -5.419 < -10.837

< -27.093

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ANALOG IN 15 BIT VOLTAGE/CURRENT 8CH IC220ALG221

Current Ranges:

Input Data Word

(Two’s Complement)

0mA to 20mA

0mA to 40mA

hex dec mA mA

8001 OR >

+21.6746 > +43.3493

7F00 32512 +21.6746 +43.3493

7530 30000 +20.0 +40.0

0001 1 +0.66667 µA +1.3333 µA

0000 0 0 0

0000 0 < 0 < 0

Input Data Word

(Two’s Complement)

±20 mA

±40 mA

hex dec mA mA

8001 OR >

+21.6746 > +43.3493

7F00 32512 +21.6746 +43.3493

7530 30000 +20.0 +40.0

0001 1 +0.6667 µA +1.3333 µA

0000 0 0 0

FFFF -1 -0.6667 µA -1.3333 µA

8AD0 -30000 -20.0 -40.0

8100 -32512 -21.6746 -43.3493 8080 UR <-21.6746 <-43.3493

Input Data Word

(Two’s Complement)

4mA to 20 mA

hex dec mA

8001 OR >

+21.339733

7F00 32512 +21.339733

7530 30000 +20.0

0001 1 +4.00053333

0000 0 +4.0 to 3.2

8002 Open circuit <+3.2

18 6226B_GE

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ANALOG IN 15 BIT VOLTAGE/CURRENT 8CH IC220ALG221

"IB ST" Format

The measured value is represented in bits 14 to 3. The remaining 4 bits are sign, measuring range, and error bits. This format corresponds to the data format used on INTERBUS ST modules.

Measured value representation in "IB ST" format (12 bits):

1514131211109876543210

SB Analog value 0/4 OC OR

SB Sign bit OC Open circuit 0/4 4 to 20 mA measuring range OR Overrange/under range

Significant Measured Values Voltage Ranges

Input Data Word

(Two’s Complement)

0V to 5 V

0 V to 10 V

0 V to 25 V

0 V to 50 V

hex dec V V V V

7FF9 32761 > 7FF8 32760 +4.9988 to

+5.375 >+10.75 > +26.875 > +53.75

+5.375

+9.9975 to +10.75

+24.9939 to +26.875

+49.9878 to +53.75

4000 16384 +2.5 +5.0 +12.5 +25.0

0008 8 1.221 mV +2.441 mV 6.1025 mV +12.205 mV

0000 0 < 0 < 0 < 0 < 0

Input Data Word

(Two’s Complement)

±5 V

±10 V

±25 V

hex dec V V V

7FF9 32761 > 7FF8 32760 +4.9988 to

+5.375 >+10.75 > +26.875

+5.375

+9.9975 to +10.75

+24.9939 to +26.875

4000 16384 +2.5 +5.0 +12.5

0008 8 +1.221 mV +2.441 mV +6.104 mV

0000 0 0 0 0

FFF8 -8 -1.221 mV -2.441 mV -6.104 mV

C000 -16384 -2.5 -5.0 -12.5

8000 -32768 -5.0 to -5.375 -10.00 to -10.75 -25.0 to -26.875 8001 -32767 -5.375 <-10.75 -26.875

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ANALOG IN 15 BIT VOLTAGE/CURRENT 8CH IC220ALG221

Current Ranges:

Input Data Word

(Two’s Complement)

0mA to 20mA

0mA to 40mA

hex dec mA mA

7FF9 32761 >+21.5 >

+43.0

7FF8 32760 +19.9951 to +21.5 +39.9902 to +43.0

4000 16384 +10.0 +20.0

0008 8 +4.8828 µA +9.7656 µA

0000 0 < 0 < 0

Input Data Word

(Two’s Complement)

±20 mA

±40 mA

hex dec mA mA

7FF9 32761 >+21.5 >

+43.0

7FF8 32760 +19.9951 to +21.5 +39.9902 to +43.0

4000 16384 +10.0 +20.0

0008 8 +4.8828 µA +9.7656 µA 0000 0 0 0

FFF8 -8 -4.8828 µA -9.7656 µA

C000 -16384 -10.0 -20.0

8000 -32768 -20.0 to -21.5 -40.0 to -43.0 8001 -32767 <-21.5 <-43.0

Input Data Word

(Two’s Complement)

4mA to 20 mA

hex dec mA

7FFD 32765 >+21.5 7FFC 32764 +19.9961 to +21.5

4000 16384 +10

000C 12 +4.003906

0004 4 +3.2 to +4.0 0006 6 < 3.2

20 6226B_GE

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ANALOG IN 15 BIT VOLTAGE/CURRENT 8CH IC220ALG221

"IB RT" Format

The measured value is represented in bits 14 to 0. An additional bit (bit 15) is available as a sign bit. This format corresponds to the data format used on INTERBUS RT modules. Diagnostic codes and error bits are not defined in this data format. An open circuit is indicated by the

positive final value 7FFF

hex

Measured value representation in "IB RT" format (15 bits):

1514131211109876543210

SB Analog value

SB Sign bit

Significant Measured Values Voltage Ranges

Input Data Word

(Two’s Complement)

0V to 5 V

0V to 10 V

0 V to 25 V

0 V to 50 V

hex dec V V V V

7FFF 32767

≥ +4.999847 ≥ +9.999695 ≥ +24.999237 ≥ +49.998474

7FFE 32766 +4.999695 +9.999390 +24.998474 +49.996948

4000 16384 +2.5 +5 +12.5 +25.0

0001 1 +152.6 µV +305.2 µV +762.9 µV +1.5259 mV

0000 0 0 0 0 0

Input Data Word

(Two’s Complement)

±5 V

±10 V

±25 V

hex dec V V V

7FFF 32767

≥ +4.999847 ≥ +9.999695 ≥ +24.999237

7FFE 32766 +4.999695 +9.999390 +24.998474

4000 16384 +2.5 +5.0 +12.5

0001 1 +152.6 µV +305.2 µV +762.9 µV

0000 0 0 0 0

FFFF -1 -152.6 µV -305.2 µV -762.9 µV

C000 -16384 -2.5 -5.0 -12.5

8001 -32767 -4.999847 -9.999695 -24.999237 8000 -32768

≤ -5.0 ≤-10.0 ≤-25.0

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ANALOG IN 15 BIT VOLTAGE/CURRENT 8CH IC220ALG221

Current Ranges:

Input Data Word

(Two’s Complement)

0mA to 20mA

0mA to 40mA

hex dec mA mA

7FFF 32767

≥ +19.9993896 ≥ +39.9987793

7FFE 32766 +19.9987793 +39.9975586

4000 16384 +10 +20

0001 1 +0.6104 µA +1.2207 µA

0000 0 0 0

Input Data Word

(Two’s Complement)

±20 mA

±40 mA

hex dec mA mA

7FFF 32767

≥ +19.999385 ≥ +39.9987739

7FFE 32766 +19.998779 +39.9975586

4000 16384 +10.0 +20.0

0001 1 +0.6104 µA +1.2207 µA

0000 0 0 0

FFFF -1 -0.0006105 -0.0012207

C000 -16384 -10.0 -20.0

8001 -32770 -19.999385 -39.9987793 8000 -32768

≤-20.0 ≤-40.0

Input Data Word

(Two’s Complement)

4mA to 20 mA

hex dec mA

7FFF 32767

≥ +19.9995117

7FFE 32766 +19.9990234

4000 16384 +12

0001 1 +0.4884 µA

0000 0 +4.0

0000 0 +3.2 to +4.0

7FFF 32767 <+3.2

22 6226B_GE

Page 23

ANALOG IN 15 BIT VOLTAGE/CURRENT 8CH IC220ALG221

"Standardized Display" Format

The data is represented in bits 14 to 0. An additional bit (bit 15) is available as a sign bit. In this format, data on the measuring range is standardized and represented in such a way that it in-

dicates the corresponding value without conversion. In this format, one bit has the following validity for the measuring ranges stated:

Measuring Range Validity of One Bit

0 V to 5 V; ±5 V 1 mV 0 V to 10 V; ±10 V 1 mV 0 V to 25 V; ±25 V 1 mV 0 V to 50 V 10 mV 0 mA to 20 mA; 4 mA to 20 mA 1 µA 0 mA to 40 mA 10 µA

This format supports extended diagnostics. Values > 8000

and < 8100

hex

indicate an error.

hex

The following diagnostic codes are possible:

Code (hex) Error

8001 Overrange 8002 Open circuit 8004 Measured value invalid/no valid measured value avai-

lable (e.g., because the channel was not configured) 8010 Configuration invalid 8020 I/O supply voltage faulty 8040 Module faulty 8080 Under range

Measured value representation in "standardized display" format (15 bits):

1514131211109876543210

SB Analog value

SB Sign bit

6226B_GE 23

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ANALOG IN 15 BIT VOLTAGE/CURRENT 8CH IC220ALG221

Significant Measured Values Voltage Ranges

Input Data Word

(Two’s Complement)

0V to 5V

0V to 50V

hex dec V V V

8001 OR >

+5.419 > +54.187 > +5.419

152B 5419 +5.419 +54.187 +5.419

1388 5000 +5.0 +50.0 +5.0

0001 1 +1.0 mV +10.0 mV +1.0 mV

0000 0 0 0 0

0000 -1 < 0 < 0 -1.0 mV

EC78 -5000 ––-5.0

EAD5 -5419 ––-5.419

8080 UR ––< -5.419

Input Data Word

(Two’s Complement)

0 V to 10 V

±10 V

hex dec V V

8001 OR > +10.837 > +10.837

2A55 10837 +10.837 +10.837

2710 10000 +10.0 +10.0

0001 1 +1.0 mV +1.0 mV

0000 0 0 0

0000 0 < 0 –

FFFF -1 – -1.0 mV

D8F0 -10000 – -10.0

D5AB -10837 – -10.837

8080 UR – < -10.837

±5 V

24 6226B_GE

Page 25

ANALOG IN 15 BIT VOLTAGE/CURRENT 8CH IC220ALG221

Input Data Word

(Two’s Complement)

0 V to 25 V

±25 V

hex dec V V

8001 OR > +27.093 > +27.093

69D5 27093 +27.093 +27.093

61A8 25000 +25.0 +25.0

0001 1 +1.0 mV +1.0 mV

0000 0 0 0

0000 0 < 0 –

FFFF -1 – -1.0 mV

9E58 -25000 – -25.0

962B -27093 – -27.093

8080 UR – < -27.093

6226B_GE 25

Page 26

ANALOG IN 15 BIT VOLTAGE/CURRENT 8CH IC220ALG221

Current Ranges:

Input Data Word

0mA to 20mA

(Two’s Complement)

hex dec mA

8001 OR >

+21.6747

54AA 21674 +21.6747

4E20 20000 +20.0

0001 1 +1.0 µA

0000 0 0

0000 0 < 0

Input Data Word

0mA to 40mA

(Two’s Complement)

hex dec mA

8001 OR >

+43.3493

10EE 4334 +43.3493

0FA0 4000 +40.0

0001 1 +10.0 µA

0000 0 0

0000 0 < 0

Input Data Word

±20 mA

(Two’s Complement)

hex dec mA

8001 OR

≥ +21.6747

54AA 21674 +21.6747

4E20 20000 +20.0

0001 1 +1.0 µA

0000 0 0

FFFF -1 -0.001

B1E0 -20000 -20.0

AB56 -21674 -21.6747

8080 UR < -21.6747

Input Data Word

(Two’s Complement)

±40 mA

hex dec mA

8001 OR > +43.349

10EE 4334 +43.349

0FA0 4000 +40.0

0001 1 +10.0 µA

0000 0 0

FFFF -1 -10.0 µA

F060 -4000 -40.0

EF12 -4334 -43.349

8080 UR < -43.349

Input Data Word

4mA to 20mA

(Two’s Complement)

hex dec mA

8001 OR >+21.339

43BB 17339 +21.339

3E80 16000 +20.0

0001 1 +4.001

0000 0 +4.0 to +3.2

8002 Open circuit < +3.2

26 6226B_GE

Page 27

ANALOG IN 15 BIT VOLTAGE/CURRENT 8CH IC220ALG221

Examples of Measured Value Representation in Various Data Formats

Measuring range: 0 mA to 20 mA Measured value: 10 mA

Input data word:

Format hex Value dec Value Measured Value

IB IL 3A98 15,000 10 mA IB ST 4000 16,384 10 mA IB RT 4000 16,384 10 mA Standardized display 2710 10,000 10 mA

Measuring range: ±10 V Measured value: +5 V

Input data word:

Format hex Value dec Value Measured Value

IB IL 3A98 15,000 5 V IB ST 4000 16,384 5 V IB RT 4000 16,384 5 V Standardized display 2710 5,000 5 V

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ANALOG IN 15 BIT VOLTAGE/CURRENT 8CH IC220ALG221

"PIO" Format

The PIO format enables high-resolution representation of measured values in the 4 mA to 20 mA current measuring range. In this format, an imaginary measuring range of 0 mA to 25 mA is divided into

quantization steps (65,536 steps). Thus, unipolar measured currents with a resolution of 0.38 µA/

2 LSB can be represented. Although this format is designed for the 4 mA to 20 mA range, signals between 0 mA and 24 mA can be detected so the overrange limits and the open circuit threshold in the higher-level control system are freely definable.

Measured value representation in "PIO" format (16 bits):

1514131211109876543210

Analog value

Example of parameterization using PIO format

Channel: 1 Filtering: 16-sample average Format: PIO Measuring range: 4 mA to 20 mA (PIO format is only supported in this measuring range.)

Option 1: 1 Configuring channel 1

OUT[0] 4000 OUT[1] 004A

hex

2 Reading the measured value

OUT[0] 0000 OUT[1] 0000

hex

Option 2:

Configuring channel 1 and reading the measured value

OUT[0] 5000 OUT[1] 004A

hex

Significant Measured Values

Input Data Word

(Two’s Complement)

hex dec mA

F5C2 62914 +24.0

CCCD 52429 +20.0

6666 26214 +10.0

0A3D 2621 +1.0

0001 1 +0.3815 µA 0000 0 +0

PIO

28 6226B_GE

Page 29

ANALOG IN 15 BIT VOLTAGE/CURRENT 8CH IC220ALG221

Process Data Input Words in the Event of an Error

In the event of an error, the command is mirrored in the input word IN[0] and displayed with the set error bit. The input word IN[1] indicates the error cause.

The following diagnostic codes are valid for configuration or hardware errors in all data formats:

Command (hex)

Code (hex)

PF Meaning/Note Remedy

8020 X I/O supply voltage faulty. – Check the supply voltage of

the station head (e.g., U

– Check the potential jumper

connection.

After module

8040 X Module faulty. Replace module.

start 0x00 8004 There is no valid configuration for

Configure channel.

the channel scanned.

5x00 8004 The configuration just specified is

Check and correct configuration.

invalid.

1x00 8010 There is no valid configuration for

Configure channel.

the channel scanned.

4x00 and 6000

The parameters are mirrored. This is usually caused by invalid para-

Check and correct parameters.

meters.

3C00 No diagnostic code.

PF A peripheral fault is reported to the higher-level control system

In addition to the indicator in the input words, for diagnostic codes 8040 8020

(I/O supply voltage faulty), a peripheral fault is reported to the higher-level control system.

hex

The "IB IL" and "standardized display" formats offer additional diagnostic functions. These are specified on page 16 and page 23.

(module faulty) and

hex

6226B_GE 29

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ANALOG IN 15 BIT VOLTAGE/CURRENT 8CH IC220ALG221

Startup Options

The following startup options illustrate how to use the ANALOG IN 15 BIT VOLTAGE/CURRENT 8CH terminal.

Standard Method 1

Task:

– All input channels are to be operated in the same configuration (6000

, 3

– Filtering by mean-value generation: 32-sample average (11

, 0

– Format: IB IL (000

bin

– Measuring range: ±10 V (0001

dec

)

, 1

dec

)

bin

dec

)

hex

)

Procedure: 1 Install the terminal.

2 Connect the voltage (power up). 3 Configure the terminal (initialization phase; e.g., in the initialization phase of the application

program).

4 Read the measured value for each channel in turn.

Initialization phase:

According to the task, the appearance of the process data output words is as follows:

OUT[0] Bit 1514131211109876543210 Assignment 0 bin 0

1 1 0 0 0 0 000000000

Command 00000000

hex 6000

OUT[1] Bit 1514131211109876543210 Assignment 0 0 0 0 0 0 bin 000000

Filter 0 Format Measuring range

1 100 0 0 0 0 0 1

hex 0301

With the command in OUT[0], the configuration according to OUT[1] is sent to the electronics module. After configuration is complete, the command and the configuration are mirrored in the process data input words.

30 6226B_GE

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ANALOG IN 15 BIT VOLTAGE/CURRENT 8CH IC220ALG221

Configure terminal: OUT[0]: 6000

Configuration completed successfully: IN[0] 6000 Error during configuration: IN[0] F000

hex

OUT[1]: 0301 IN[1]: 0301 IN[1]: 0301

hex

A cyclic program sequence, which reads the measured values of the individual channels, takes place after configuration has been successfully completed.

The appearance of the process data output word OUT[0] is as follows:

OUT[0] Bit 151413121110 9 8 7 6 5 4 3 2 1 0 Assignment 0 bin 0

0 0 0 0 Z2Z1Z000000000

Command 00000000

hex 0 x 0 0

The 0x00 is 0000

command does not require any parameters and the value of the parameter word OUT[1]

hex

With the command in OUT[0], the read request is sent to the electronics module. After the command has been executed, it is mirrored in the process data input word IN[0] and the analog value (xxxx or a diagnostic message (yyyy

Read measured value for channel 1: OUT[0]: 0000 Command executed successfully: IN[0] 0000 Error during execution: IN[0] 8000

) is displayed in the process data input word IN[1].

hex

OUT[1]: 0000 IN[1]: xxxx IN[1]: yyyy

hex

)

Read measured value for channel 2: OUT[0]: 0100 Command executed successfully: IN[0] 0100 Error during execution: IN[0] 8100

hex

OUT[1]: 0000 IN[1]: xxxx IN[1]: yyyy

hex

and so on until:

Read measured value for channel 8: OUT[0]: 0700

Command executed successfully: IN[0] 0700 Error during execution: IN[0] 8700

6226B_GE 31

hex

OUT[1]: 0000 IN[1]: xxxx IN[1]: yyyy

hex

Page 32

ANALOG IN 15 BIT VOLTAGE/CURRENT 8CH IC220ALG221

C o n f i g u r e

t e r m i n a l

E v a l u a t e a n d

r e m o v e e r r o r s

6 0 0 0 0 3 0 1

N o

O K ?

n = 1

R e a d m e a s u r e d

v a l u e o f c h a n n e l n

0 x 0 0 0 0 0 0

O K ?

Y e s

h e x

I n i t i a l i z a t i o n

C y c l i c p r o g r a m s e q u e n c e

Y e s

N o

h e x

Y e sN o

n > 8 ?

n = n + 1

f o r r e a d i n g t h e m e a s u r e d v a l u e s o f c h a n n e l s 1 t o 8

6 2 2 6 A 0 1 4

Figure 10 Schematic initialization and cyclic program sequence when configuring the entire terminal

32 6226B_GE

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ANALOG IN 15 BIT VOLTAGE/CURRENT 8CH IC220ALG221

Standard Method 2

Task:

– The input channels are to be operated in different configurations.

The channels are to be configured first (4x00 After configuration, the measured values are to be read (0x00

hex

– Configuration of the channels:

Parameter Channel 1 Channel 2 Channel 3 ...

Filtering by meanvalue generation:

Format: IB IL

Measuring range: 0 V to 50 V

No filtering (01

, 1

bin

dec

bin

, 0

, 6

(000

(0110

dec

)

dec

16-sample average (00

, 0

bin

IB IL

)

(000

bin

±5 V

)

(0011

bin

, 0

dec

, 3

dec

)

dec

4-sample average (10

, 2

dec

)

bin

IB IL

)

(000

bin

, 0

dec

)

4 mA to 20 mA

)

(1010

bin

, 10

dec

)

Procedure: 1 Install the terminal.

2 Connect the voltage (power up). 3 Configure each individual channel in the terminal in turn (initialization phase; e.g., in the

initialization phase of the application program).

4 Read the measured value for each channel in turn.

...

Initialization phase:

The appearance of the process data output word OUT[0] is as follows for all channels:

OUT[0] Bit 151413121110 9 8 7 6 5 4 3 2 1 0 Assignment 0 bin 0

1 0 0 0 Z2Z1Z000000000

Command 00000000

hex 4 x 0 0

The process data output word OUT[1] indicates the parameters for each channel according to the task: For channel 1, it looks like this:

OUT[1] Bit 151413121110 9 8 7 6 5 4 3 2 1 0 Assignment 000000 bin 000000

Filter 0 Format Measuring range

0 100 0 0 0 1 1 0

hex 0106

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ANALOG IN 15 BIT VOLTAGE/CURRENT 8CH IC220ALG221

With the command in OUT[0], the configuration according to OUT[1] is sent to the electronics module for each channel. After configuration of a channel is complete, the command and the configuration are mirrored in the process data input words.

Configure channel 1: OUT[0]: 4000 Configuration completed successfully: IN[0] 4000 Error during configuration: IN[0] C000

Configure channel 2: OUT[0]: 4100 Configuration completed successfully: IN[0] 4100 Error during configuration: IN[0] C100

Configure channel 3: OUT[0]: 4200 Configuration completed successfully: IN[0] 4200 Error during configuration: IN[0] C200

hex

OUT[1]: 0106 IN[1]: 0106 IN[1]: 0106

OUT[1]: 0003 IN[1]: 0003 IN[1]: 0003

OUT[1]: 020A IN[1]: 020A IN[1]: 020A

hex

Configure channels 4 to 8 according to the example configurations shown. A cyclic program sequence, which reads the measured values of the individual channels,

takes place after the configuration for each individual channel has been completed successfully. The appearance of the process data output word OUT[0] is as follows:

OUT[0] Bit 1514131211109876543210 Assignment 0 bin 0

0 0 0 0 Z2Z1Z000000000

Command 00000000

hex 0 X 0 0

The 0x00 is 0000

command does not require any parameters and the value of the parameter word OUT[1]

hex

) is displayed in the process data input word IN[1]. The appearance

hex

of the process data input and output words is the same as in example 1.

34 6226B_GE

)

Page 35

n = 1

C o n f i g u r e c h a n n e l n

ANALOG IN 15 BIT VOLTAGE/CURRENT 8CH IC220ALG221

N o

E v a l u a t e a n d

r e m o v e e r r o r s

N o

R e a d m e a s u r e d

v a l u e o f c h a n n e l n

4 x 0 0 x x x x

O K ?

n > = 8 ?

n = 1

0 x 0 0 0 0 0 0

Y e s

h e x

n = n + 1

I n i t i a l i z a t i o n o f e a c h i n d i v i d u a l c h a n n e l

N o

C y c l i c p r o g r a m s e q u e n c e

Y e s

N o

h e x

n > 8 ?

n = n + 1

f o r r e a d i n g t h e m e a s u r e d v a l u e s o f c h a n n e l s 1 t o 8

O K ?

Y e sN o

6 2 2 6 A 0 1 5

Figure 11 Schematic initialization and cyclic program sequence when configuring channels with dif-

ferent parameters

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ANALOG IN 15 BIT VOLTAGE/CURRENT 8CH IC220ALG221

Special Methods

The group commands are regarded as special methods.

Task:

– The measured values of channels 1 to 4 (group A) are to be read in one cycle and the measured

values of channels 5 to 8 (group B) in another cycle (7000

for group A; 7100

hex

for group B).

hex

– The input channels are to be operated in different configurations (e.g., as in example 2).

Procedure: 1 Install the terminal.

2 Connect the voltage (power up). 3 Configure each individual channel in the terminal in turn

(initialization phase; e.g., in the initialization phase of the application program). As the channels are to have different configurations, they must be configured using the 4x00

hex

command.

4 Use group command 7000

Then use group command 7100

to read the measured values for channels 1 to 4 simultaneously.

hex

to read the measured values for channels 5 to 8.

hex

Both groups can be reread cyclically.

Advantages of the Standard Methods Compared With the Special Methods

– The standard methods read the measured values with greater reliability because the command

is mirrored for every measured value. Thus, it is possible to detect precisely which channel supplied the measured value.

– The standard methods enable more accurate error diagnostics than the special methods. – If you switch the group command for reading the channels (e.g., between 7000

and 7100

hex

when reading two groups of four channels each), you must allow sufficient time to do so. It must be ensured that the received measured values belong to the requested group. This can only be ensured using waiting times.

36 6226B_GE

Page 37

Application Notes

ANALOG IN 15 BIT VOLTAGE/CURRENT 8CH IC220ALG221

Notes on typical applications are provided here in order to facilitate optimal use of the ANALOG IN 15 BIT VOLTAGE/CURRENT 8CH terminal in different operating modes.

Precision DC Measurements

Precision DC measurements constitute an optimal area of application for the ANALOG IN 15 BIT VOLTAGE/CURRENT 8CH terminal. The high-resolution analog-to-digital converter and excellent instrumentation amplifier technology achieve a very high level of accuracy (typically

0.02% in the voltage range). In order to take full advantage of these features,

the following configurations are recommended: – Measured value acquisition: according to

standard method 1 or 2

– Format: IB IL (high-resolution) – Filtering: 32-sample average

This suppresses undesirable interference signals and provides a low-noise, accurate measured result. Non-time-critical, i.e., slow, processes are a prerequisite for this configuration.

Closed-Loop Control Tasks

The ANALOG IN 15 BIT VOLTAGE/CURRENT 8CH terminal makes closed-loop control tasks particularly easy to carry out. The terminal supports the advantages of bus with regard to time equidistance. As the terminal scans input signals synchronously with the bus clock and the bus runtime has a very small jitter, the input signals can be scanned equidistantly. Thus, the measured results are particularly suitable for use in closed-loop control.

The following configurations and measures are recommended:

– Measured value acquisition: according to

standard method 1 or 2 In special cases, the group commands (7x00

) can be an exception.

hex

– Filtering: no mean-value generation

As total accuracy is often irrelevant in closed-loop control tasks, filtering is not necessary. This increases the dynamic response of the terminal and speeds up the closed-loop control circuit.

– Adjust the bus cycle time to the firmware

runtime Example: in standard method 1, the firmware runtime is <800 µs, i.e., the bus cycle time should be set to 800 µs.

In applications in which an 8- bit resolution is sufficient, group commands 7000 7100

can be used to read four channels si-

hex

and

multaneously. Scanning is synchronous with the bus clock here too. Four channels require <1500 µs.

6226B_GE 37

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ANALOG IN 15 BIT VOLTAGE/CURRENT 8CH IC220ALG221

Signal Scanning or Fast, Sudden Signals

The ANALOG IN 15 BIT VOLTAGE/CURRENT 8CH terminal is ideal for scanning signals. As a result of the high input cut-off frequency (3.5 kHz), there are no limiting elements in the analog stage. The maximum signal frequency that can be scanned depends on the firmware runtime and the bus cycle time.

The terminal measuring device can measure signals with a frequency of 1/800 µs = 1.25 kHz. According to Shannon's sampling theorem, therefore, the signal frequency that can be scanned is 1.25 kHz/2 = 0.625 kHz.

This signal frequency can only be achieved if sufficiently fast bus operation can be ensured.

The following configurations and measures are recommended:

– Measured value acquisition: according to

standard method 1 or 2

– Filtering: no mean-value generation

This increases the dynamic response of the terminal.

– Adjust the bus cycle time to the firmware

runtime This achieves discrete periods of scanning. Example: in standard method 1, the firmware runtime is <800 µs, i.e., the bus cycle time should be set to 800 µs.

Linked Voltages

When using linked voltages, ensure that the ANALOG IN 15 BIT VOLTAGE/CURRENT 8CH terminal has eight single-ended inputs. A common ground potential should be used with linked voltages. As the terminal has many measuring ranges, for example the 0 V to 50 V range, and the resolution is high enough, applications with several linked voltages can also be used without any problems.

A I 8 S F

1 2

U 1 U 2 U 3 U 4 U 5 U 6 U 7 U 8

G N D

- +

6 V

2 3 8

- +

6 V

- +

6 V

. . .

- +

6 V

6 2 2 6 A 0 1 6

Figure 12 Measuring linked voltages

38 6226B_GE

Page 39

ANALOG IN 15 BIT VOLTAGE/CURRENT 8CH IC220ALG221

Current Loops

If the ANALOG IN 15 BIT VOLTAGE/CURRENT 8CH terminal is used to measure currents in current loops, please ensure that the eight current inputs operate on a common ground potential (single-ended). Thus, the measured input should always be on the GND potential with the minus input.

A I 8 S F

1 2

I 1

G N D

6 2 2 6 A 0 1 7

Figure 13 Measuring currents

6226B_GE 39

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ANALOG IN 15 BIT VOLTAGE/CURRENT 8CH IC220ALG221

Tolerance and Temperature Response

Voltage inputs

= 25°C (77°F).

Measuring Range Absolute

(Typical)

0 V to 5 V; ±5 V ±1.0 mV ±5.0 mV ±0.02% ±0.10% 0 V to 10 V; ±10 V ±2.0 mV ±10.0 mV ±0.02% ±0.10% 0 V to 25 V; ±25 V ±5.0 mV ±25.0 mV ±0.02% ±0.10% 0 V to 50 V ±10.0 mV ±50.0 mV ±0.02% ±0.10%

= -25°C … +55°C (-13°F … +131°F)

Measuring Range Absolute

(Typical)

0 V to 5 V; ±5 V ±5.0 mV ±15.0 mV ±0.10% ±0.30% 0 V to 10 V; ±10 V ±10.0 mV ±30.0 mV ±0.10% ±0.30% 0 V to 25 V; ±25 V ±25.0 mV ±75.0 mV ±0.10% ±0.30% 0 V to 50 V ±50.0 mV ±150.0 mV ±0.10% ±0.30%

Absolute (Maximum)

Relative (Typical)

Relative (Maximum)

Current Inputs

= 25°C (77°F)

Measuring Range Absolute

(Typical)

0 mA to 20 mA; 4 mA

±8.0 µA ±40.0 µA ±0.04% ±0.20%

Absolute (Maximum)

Relative (Typical)

Relative (Maximum)

to 20 mA; ±20 mA 0 mA to 40 mA;

±16.0 µA ±80.0 µA ±0.04% ±0.20%

±40 mA

= -25°C … +55°C (-13°F … +131°F)

Measuring Range Absolute

(Typical)

0 mA to 20 mA

±28.0 µA ±80.0 µA ±0.14% ±0.40%

Absolute (Maximum)

Relative (Typical)

Relative (Maximum)

4 mA to 20 mA

±20 mA

0 mA to 40 mA

±56.0 µA ±160 µA ±0.14% ±0.40%

±40 mA

40 6226B_GE

Page 41

ANALOG IN 15 BIT VOLTAGE/CURRENT 8CH IC220ALG221

Additional Tolerances for Electromagnetic Interference

Type of Electromagnetic Interference

Electromagnetic fields; field strength 10 V/m according to EN 61000-4-3/IEC 61000-4-3

Conducted interference Class 3 (test voltage 10 V) according to EN 61000-4-6/IEC 61000-4-6

Fast transients (bursts) 4 kV supply, 2 kV input according to EN 61000-4-4/IEC 61000-4-4

Typical Deviation From the

Measuring Range Final

Value (Voltage Input)

Relative Relative

< ±2% < ±2%

< ±1% < ±1%

Typical Deviation From the

Measuring Range Final

Value (Current Input)

6226B_GE 41

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ANALOG IN 15 BIT VOLTAGE/CURRENT 8CH IC220ALG221

Technical Data

General Data

Housing dimensions (width x height x depth) 48.8 mm x 120 mm x 71.5 mm

(1.921 in. x 4.724 in. x 2.815 in.) Weight 125 g (without connectors) Operating mode Process data operation with 2 words Type of sensor connection 2-wire technology Permissible temperature (operation) -25°C to +55°C (-13°F to 131°F) Permissible temperature (storage/transport) -25°C to +85°C (-13°F to 185°F) Permissible humidity (operation) 75% on average, 85% occasionally

Between -25°C and +55°C (-13°F to +131°F) appropriate measures against increased humidity (> 85%) must be taken.

Permissible humidity (storage/transport) 75% on average, 85% occasionally

For a short period, slight condensation may appear on the outside of the housing if, for example, the terminal is brought into a closed room from a vehicle.

Permissible air pressure (operation) 80 kPa to 106 kPa

(up to 2000 m [6562 ft.] above sea level) Permissible air pressure (storage/transport) 70 kPa to 106 kPa

(up to 3000 m [9843 ft.] above sea level) Degree of protection IP 20 according to IEC 60529 Class of protection Class 3 according to VDE 0106 and IEC 60536

Interface

Bus interface Data routing

Power Consumption

Communications power U

Current consumption from U I/O supply voltage U Current consumption to U

ANA

7.5 V

48 mA, typical/55 mA, maximum

24 V DC

30 mA, typical/35 mA, maximum Total power consumption 1500 mW, typical

Supply of the Electronics Module and I/Os Through Bus Terminal/Power Terminal

Connection method Potential routing

42 6226B_GE

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ANALOG IN 15 BIT VOLTAGE/CURRENT 8CH IC220ALG221

Analog Inputs

Number 8 analog single-ended inputs Signals/resolution in the process data word

(quantization)

See tables in Section „Formats for Representation of Measured Values“ auf Seite 16

Measured value representation In the formats

IB IL (15-bit with sign bit) IB ST (12-bit with sign bit) IB RT (15-bit with sign bit) Standardized display (15-bit with sign bit) PIO (16-bit)

Please read the notes on page 17 and page 24 on measured value representation in "IB IL" and "standardized display" format.

Digital filtering (mean-value generation) None or over 4, 16 or 32 measured values

Default setting: over 16 measured values Conversion time of the A/D converter 10 µs, maximum Process data update of the channels Bus-synchronous Firmware runtime depending on the command

– 0x00 – 5x00 – 7000 – 7400

hex

/7100 /7500

hex

/7600

hex

/7700

hex

< 800 µs

< 850 µs

<1500 µs

< 1300 µs

Analog Input Stages Voltag e Inputs

Input resistance > 240 k

Ω

Limit frequency (-3 dB) of the input filter 3.5 kHz Behavior upon sensor failure Goes to 0 V Maximum permissible voltage between analog

50 V

voltage inputs and an analog reference potential or between two voltage inputs

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ANALOG IN 15 BIT VOLTAGE/CURRENT 8CH IC220ALG221

Analog Input Stages (Continued) Current Inputs

Input resistance 25

Ω (shunt)

Limit frequency (-3 dB) of the input filter 3.5 kHz Behavior upon sensor failure Goes to 0 mA/4 mA Maximum permissible voltage between analog

±2.5 V (corresponds with 100 mA via the shunts) current inputs and an analog reference potential or between two current inputs

Maximum permissible current in every input ±100 mA

Safety Measures

Surge voltage and overcurrents 100% overload, maximum

Electrical Isolation/Isolation of Voltage Ranges

To provide electrical isolation of the logic level and the I/O area, it is necessary to supply the bus terminal and the sensors, which are connected to the described analog input terminal, from separate power supplies. Interconnection of the 24 V power supplies is not permitted.

Common Potentials

The 24 V main power supply, 24 V segment voltage, and GND have the same potential. FE is a separate potential area.

Separate Potentials in the System Consisting of Bus Terminal/Power Terminal and an I/O Terminal

- Test Distance - Test Voltage

5 V supply incoming remote bus/7.5 V supply (bus logic) 500 V AC, 50 Hz, 1 min 5 V supply outgoing remote bus/7.5 V supply (bus logic) 500 V AC, 50 Hz, 1 min

7.5 V supply (bus logic)/24 V supply U

/I/O 500 V AC, 50 Hz, 1 min

ANA

/functional earth ground 500 V AC, 50 Hz, 1 min

ANA

I/Os/functional earth ground 500 V AC, 50 Hz, 1 min

Error Messages to the Higher-Level Control or Computer System

Failure of the voltage supply U

ANA

Yes

I/O error/user error Yes, error message via the process data input

words (see page 29)

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ANALOG IN 15 BIT VOLTAGE/CURRENT 8CH IC220ALG221

Ordering Data

Description Order Designation Order No.

Terminal with eight analog input channels ANALOG IN 15 BIT

VOLTAGE/CURRENT 8CH

Four connectors with shield connector for the connection of two cables are needed for complete fitting of the terminal.

IC220ALG221

Connector with shield connector for the connection of two cables; 5 per pack

I/O TERMINAL STRIP W/DUAL SHIELD QTY 5

IC220TBK062

6226B_GE 45

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ANALOG IN 15 BIT VOLTAGE/CURRENT 8CH IC220ALG221

46 6226B_GE

GE VersaPoint IC220ALG221 System Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

ANALOG IN 15 BIT VOLTAGE/CURRENT 8CH IC220ALG221

Function

Features

Local Diagnostic Indicators and Terminal Assignment

Des. Color Meaning

Installation Instructions

All of the analog terminals need a separate main circuit.

Internal Circuit Diagram

Key:

Electrical Isolation

Connection Notes

Connection Examples

Connection of Active Sensors

Programming Data

Process Data Words

Process Data Output Word 0 (OUT[0]) Process Data Output Word 1 (OUT[1])

OUT[0]

Byte Byte 0 Byte 1 Bit 7654321076543210 Assignment 0

OUT[1]

Byte 2 Byte 3

Filter 0 Format Measuring

Process Data Input Word 0 (IN[0]) Process Data Input Word 1 (IN[1])

IN[0]

Byte 0 Byte 1

Depends on the command

IN[1]

Byte 2 Byte 3

Depends on the command

Process Data Output Words OUT[0] and OUT[1]

OUT[0] (Command Code)

Bit 15 to bit 8 (command):

Bit 15 to Bit 8 OUT[0] Command Function

channel x Configure entire terminal (all channels)

Code Channel Code Group

OUT[1] (Parameter Word)

Filter 0 Format Measuring range

Code Filter (Filtering by Mean-Value Generation)

Code Format bin dec 000 0 IB IL (15 bits) (default)

Bit 3 to bit 0:

Code Measuring Range (Voltage)

0000 0 0 V to 10 V (default)

0001 1 ±10 V 0010 2 0 V to 5 V 0011 3 ±5 V 0100 4 0 V to 25 V 0101 5 ±25 V 0110 6 0 V to 50 V 0111 7 Reserved

Code Measuring Range (Current)

1000 8 0 mA to 20 mA

1001 9 ±20 mA 1010 10 4 mA to 20 mA 1011 11 Reserved 1100 12 0 mA to 40 mA 1101 13 ±40 mA 1110 14 Reserved 1111 15 Reserved

Process Data Input Words IN[0] and IN[1]

IN[1]

Firmware version Module ID Example: 123

Filter 0 Format Measuring range

IN[1] Bit 151413121110 9 8 7 6 5 4 3 2 1 0 Assignment Measured value in the appropriate format

I N [ 0 ] I N [ 1 ]

16-bit measured value channel 1 in the appropriate format

16-bit measured value channel 2 in the appropriate format

"IB IL" Format

The following diagnostic codes are possible:

Measured value representation in "IB IL" format (15 bits)

1514131211109876543210 SB Analog value

Significant Measured Values Voltage Ranges

8001 OR >

7F00 32512 +5.419 +10.837 +27.093 +54.187

7530 30000 +5.0 +10.0 +25.0 +50.0

0001 1 +166.67 µV +333.33 µV +833.33 µV +1.6667 mV

00000 0000

8001 OR > +5.419 >

7F00 32512 +5.419 +10.837 +27.093

7530 30000 +5.0 +10.0 +25.0

0001 1 +166.67 µV +333.33 µV +833.33 µV

0000 0 0 0 0

FFFF 0 -166.67 µV -333.33 µV -833.33 µV

8AD0 -30000 -5.0 -10.0 -25.0

8100 -32512 -5.419 -10.837 -27.093 8080 UR < -5.419 < -10.837

Current Ranges:

8001 OR >

7F00 32512 +21.6746 +43.3493

7530 30000 +20.0 +40.0

0001 1 +0.66667 µA +1.3333 µA