Siemens High Speed Counter and Encoder Module SIMATIC 505 User Manual

SIMA

TIC 505

High Speed Counter and Encoder Module

User

Manual

Order Number: PPX:505–81 Manual Assembly Number: 2586546–0019 Second Edition

13–2

Copyright

1992 by Siemens Industrial Automation, Inc.

Reproduction, contents is not permitted without express consent of Siemens Industrial created by patent grant or registration of a utility model or design, are reserved.

Since Siemens Industrial Automation, Inc. does not possess full access to data concerning all of the uses and applications of customer’s products, we do not assume responsibility either for customer product design or for any infringements of patents or rights of others which may result from our assistance.

01/21/92

transmission or use of this document or

Automation, Inc. All rights, including rights

T

echnical data is subject to change.

W

e check the contents of every manual for accuracy at the time it is approved for printing; however undetected errors. Any errors found will be corrected in subsequent editions. Any suggestions for improvement are welcomed.

, there may be

Overview

1.1 Features 1-2.

1.2 Inputs 1-4

1.3 Outputs 1-5

1.4 LED Indicators 1-6.

1.5 Counting Modes 1-7.

1.5.1 Pulse-Counter Mode 1-7.

1.5.2 Quadrature Mode Overview 1-8.

1.5.3 1X Quadrature 1-8.

1.5.4 2X Quadrature 1-9.

1.5.5 4X Quadrature 1-10.

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

Series

505 High Speed Counter

and Encoder Module User

’

s Manual

Overview

1-1

1.1 Features

The

Series 505 High Speed Counter (HSC) module (PPX:505-7002)

provides two independent high-speed counter channels.

Each channel has the following features.



Four counter modes:



Pulse counter



Quadrature counter modes: 1X, 2X, 4X



A 10 kHz count rate with a minimum pulse width of 25



Four inputs:



two count inputs

s.

 reset  inhibit

 T

wo field outputs, each controlled by a separate programmable preset.



LED indicators display the status of the A and B count inputs, and of Y1 and Y2 outputs.

!

 The

All inputs may be sinking or sourcing (with external 24 VDC power supply).

The HSC module operates asynchronously from the controller scan. Y

ou can program the controller to monitor the HSC and/or to provide high-level control of the HSC’

s operation. T

o support these functions, the HSC provides reset, inhibit, output and counter status to the controller and accepts reset and inhibit commands, and preset values from the controller

HSC module controls its four outputs. If the controller switches from the Run mode to the Program mode, the HSC continues to function as programmed, and outputs may be activated by the HSC. This means that if you switch the controller to Program mode, any devices controlled by the four outputs of the HSC will continue to operate as programmed.

.

1-2



Series

and Encoder Module User

505 High Speed Counter

’

s Manual

Bezel Screw

LEDs

Base Plane Connector

Terminal

Block

Printed Circuit Board

Front Bezel

Bezel Screw



Series 505 High Speed Counter

and Encoder Module User

’

s Manual

Figure 1-1

High

Speed Counter Module

Overview

1-3

1.2 Inputs

The

HSC module has two independent channels. Each channel has four

inputs.



Reset



Inhibit

 T

wo counter inputs

Each input may be used as either sinking or sourcing (with external 5–24 VDC power supply). The input signals are connected to the field wiring terminal block on the front bezel.

Counter Inputsą

Each channel has two counter inputs — Input A and

Input B.

Reset

Current flow through the reset input sets the channel’

s counter to zero. The counter will be held at zero until the reset input becomes inactive.

Inhibitą

Current flow through the inhibit input inhibits the channel from counting. The counter holds at the last value and does not change until the inhibit input becomes inactive.

NOTE:

When in the pulse counter mode, if the A or B input is in a different state at the beginning and end of an inhibit signal, the count will change according to the normal counting logic. If both A and B inputs are in different states, the change may be as much as two counts.

NOTE:

There are also software reset and inhibit functions. See Section 3.

1-4



Series

and Encoder Module User

505 High Speed Counter

’

s Manual

1.3 Outputs

Each

channel has two open collector outputs capable of driving TTL level signals or sinking up to 0.4 Amps of current (at 40_C) from an external 24 VDC source and load.

Y

Output

Output Return

Output Circuit

Y2

Y1

0 P1 P2 65,535

Counter V

Figure 1-2

The

output transistor (Y1 or Y2) turns on when the count is greater than or

alue

Output

equal to the corresponding preset. Figure 1-2 shows the field output operation. Y

ou can invert this operation by setting the appropriate bits in

the setup word, WY4. See Section 4.1.



Series

505 High Speed Counter

and Encoder Module User

’

s Manual

Overview

1-5

1.4 LED Indicators

Each indication of the channel’

channel contains four LED indicators which provide a visual

s status as shown in Figure 1-3.

1-6



Figure 1-3

A Turns B T Y1 T Y2 T

NOTE:ă

on when there is current flow through the A input. urns on when there is current flow through the B input. urns on when Output 1 is on. urns on when Output 2 is on.

If Reset or Inhibit is turned on, the HSC does not count, and the A

and B LEDs are frozen.

High

Speed Counter LEDs

and Encoder Module User

Series

505 High Speed Counter

’

s Manual

1.5 Counting Modes

1.5.1 Pulse Mode

Counter

Each channel has two inputs, A and B. In the pulse counter mode, counting occurs on the rising or falling edge of the incoming pulses. The relationship of the states of these two inputs determines the direction of the count. See T

able 1-1. T

incremental encoders.

T

able 1-1

Counter

Direction

ypical devices for counting are high-speed static switches or

Deter

mining Count in Pulse Counter Mode

Edge A

Input

B Input

up

up down down

In

the pulse counter mode, the channel senses the edges

input to count up or down. See Figure 1-4. T

”

#

”

#

low

high

o reliably record this transition

from low to high, the pulse width must be at least 8

Pulse Counter Mode

Count Value

Count Input Input A

Input B

1

8 s

min

2 3 2 1

11 s

min

high

low

of the A or the B

s.



Series

505 High Speed Counter

and Encoder Module User

’

s Manual

Count Up

Figure 1-4

Pulse

Counter Mode 0

Count Down

Overview

1-7

Counting Modes (continued)

1.5.2 Quadrature

Mode



1.5.3 1X Quadratur

e

For quadrature mode, each channel counts according to rising and/or falling edges. T Different quadrature modes are selected based on the resolution required by the application and the encoder used.

The module counts on the edges of the A input pulses.



When input A leads input B, the HSC counts up on each rising edge of input A.



When input B leads input A, the HSC counts down on the falling edge of input A.

Figure 1-5 illustrates the relationship between inputs A and B and the count value in

1X Quadrature

ypical devices for quadrature inputs are optical encoders.

1X Quadrature mode.

Count Value

A

B

12 10

26.7 s

25 s min

Count Up

(A Leading)

Figure 1-5

min

1X

Quadrature Mode

Count Down

(B Leading)

1-8

Overview

Series

and Encoder Module User

505 High Speed Counter

’

s Manual

1.5.4 Quadratur

2X

e

If input A leads input B, the module counts up on both the rising and falling edges of input A. If input B leads input A, the module counts down on the rising and falling edges of input A.

Figure 1-6 illustrates the relationship between inputs A and B and the count value in the 2X quadrature mode.

2X Quadrature

Count V

A

B

alue

1234 3210

25 s min

Counts Up

(A Leading)

Figure 1-6

26.7 s min

2X

Quadrature Mode

Counts Down

(B Leading)



Series

505 High Speed Counter

and Encoder Module User

’

s Manual

Overview

1-9

Counting Modes (continued)

1.5.5 Quadratur

4X

e

If input A leads input B, the module counts up on rising and falling edges of both input A and input B. If input B leads input A, the module counts down on the rising and falling edges of input A and input B.

Figure 1-7 shows the relationship between inputs A and B and the count value in the 4X

4X Quadrature

quadrature mode.

Count V

A

B

alue

12 34 5 6 7 8 7 65 4 32 10

25 s min

Counts Up

(A Leading)

Figure 1-7

26.7 s min

4X

Quadrature Mode

Counts Down

(B Leading)

1-10

Overview

Series

and Encoder Module User

505 High Speed Counter

’

s Manual

Chapter 2

Installation

2.1 Before Installing the Module 2–2.

2.1.1 Visual Inspection 2-2.

2.1.2 Additional References 2-2.

2.1.3 Handling the Module 2-2.

2.1.4 General Wiring Considerations 2-3.

2.1.5 Hierarchy of Installation 2-4.

2.2 Selecting Counter Operation 2-5.

2.2.1 Selecting Counter Mode 2-5.

2.2.2 Selecting the Reset Filter 2-6.

2.3 Inserting the Module in the I/O Base 2-7.

2.4 Wiring the Module 2-8.

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.4.1 Wiring the Terminal Block 2-8.

2.4.2 Powering Up the Module 2-8.

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2.5 Logging the Module into the Controller 2-10.

2.5.1 Updating the I/O Configuration Definition 2-10.

2.5.2 Selecting the I/O Configuration 2-10.

2.5.3 Viewing I/O Configuration Chart 2-11.

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

Series

505 High Speed Counter

and Encoder Module User

’

s Manual

Installation

2-1

2.1 Before Installing the Module

2.1.1 Inspection

Visual

2.1.2

Additional Refer

ences

If there is any visible damage to the module, contact your Siemens Industrial Automation, Inc. distributor for replacement.

Refer to the manuals listed below for instructions on installing, programming, and troubleshooting your Series 505

E

controller

.

2.1.3

Handling the Module

D SIMATICr TI545 System Manual D SIMATICr TI525



/

TI535



Hardware and Installation Manual

(PPX:545–8101)

(PPX:505–8103)

D SIMATICr TI505



Programming

Reference Manual

(PPX:505–8104)

Many integrated circuit (IC) devices are susceptible to damage by the discharge of static electricity

. Follow the suggestions listed below to reduce the probability of damage to these devices when you are handling a controller

, a base controller

, or any of the I/O modules.

Both the module and the person handling the module should be at the same ground potential. To accomplish this, ensure the following.

D

The module is transported in an anti-static container or antistatic material.

D

The work area has a conductive pad with a lead connecting it to a common ground.

D Y

ou are grounded by making contact with the conductive pad and/or by

wearing a grounded wrist strap.

2-2

Installation

Series

and Encoder Module User

505 High Speed Counter

’

s Manual

2.1.4 W

General

iring

Considerations

The count, inhibit, and unfiltered reset inputs are high-speed inputs which may respond to noise present on the lines. T

o avoid problems, follow these

guidelines when installing the HSC module.

D

Use the shortest possible wires.

D A

void placing signal wires parallel to high-energy wires. If the two

must meet, cross them at right angles.

D A

void bending the wire into sharp angles.

D

Use wireways for wire routing.

D

When using shielded wires, ground them only at the source end for better noise immunity

D

Place wires so that they don’t interfere with existing wiring.

D

Label the wires.

.

In some installations when both the HSC and TI505-49XX series of relay modules are used, false counts may be induced when switching high voltage in the relay module, (voltage > 40 V

rms). This is the result of

internal arcing of the relay contacts.

If you encounter this problem, place a snubber consisting of a 47 ohm 1/4 watt resistor and a 0.022 Fd capacitor across the relay contact terminals on the terminal block. Snubbers were not included in the relay modules in order to meet the need for lower current leakage in many applications.



Series

505 High Speed Counter

and Encoder Module User



:

Snubber components must be ULr component r and/or CSA Certified for use acr by the r

’

s Manual

elay module.

ecognized

oss the rated voltage being switched

Installation

2-3

Before Installing the Module (continued)

2.1.5 Hierarchy Installation

of

Figure 2-1 provides a simple flowchart of the installation process.

Set Jumper Configuration on Module

Insert the Module

Connect W

Power Up

Log into Controller

Figure 2-1 Hierar

ires

chy of Installation

2-4

Installation

Series

and Encoder Module User

505 High Speed Counter

’

s Manual

2.2 Selecting Counter Operation

2.2.1 Selecting The Counter Mode

HSC module has two channels. Y

to operate in any of four counter modes. Prior to installing the module into the I/O backplane, configure the module

by setting the jumper for each channel. Figure 2-2 shows the location of the jumpers on the printed circuit board. The top set of four pins set the counter mode for Channel 1. The bottom set of four pins set the counter mode for Channel 2. The default setting for the jumpers is 1X Quadrature mode for both channels.

ou can configure each channel

CH

1 Jumper in SLW (filtered)

position



Each channel

CH

2 Jumper in FST (unfiltered) position

Figure 2-2 Jumper

must

have one (and only one) jumper installed.

Settings



Series

505 High Speed Counter

and Encoder Module User

’

s Manual

Installation

2-5

Selecting Counter Operation (continued)

2.2.2 Selecting the Reset Filter

Some applications require faster response on the reset input line than the standard 3.75-ms filter allows. For faster response, select the optional

0.95-ms filter

. (The 0.9-ms filter is more sensitive to noisy signals, as noted

in the Environmental Specifications in Appendix B.) The reset filter may be selected independently for each input channel by

placing the jumper in the Figure 2-2.



(fast) or



(slow) position as shown in

2-6

Installation

Series

and Encoder Module User

505 High Speed Counter

’

s Manual

2.3 Inserting the Module in the I/O Base

The

HSC is a single-wide module. Insert it into any available slot on any Series 505 I/O base. Do not touch the printed circuit board while inserting the module. This could cause electrostatic damage to the components on the board. Insert the module as shown in Figure 2-3.

!

 T

o minimize potential shock, tur modules installed in the base befor Failur

e to do so may r

esult in potential injury to personnel or damage to

equipment.

n of

f power to the I/O base and any

e inserting or r

emoving a module.

3ĂĂĂ(2.6ĂĂ)Ă maxĂ 

Base Plane Connectors

Series

505 High Speed Counter

and Encoder Module User

’

s Manual

Figure 2-3

Inserting the Module into the I/O Base

Installation

2-7

2.4 Wiring the Module

2.4.1 Wiring the W Ter

minal Block

iring the module consists of wiring the the input and output signals. See Figure 2-4 and Figure 2-5 for general guidelines. All connections are made at the module terminal block. See Figure 2-5. Output returns for Channel 1 and 2 are internally connected.

!

 Tur

2.4.2 Powering Up the Module

Use the T

n of

befor

erminal Block W

orksheet in Appendix B for planning your wiring.

f power to the I/O base and any modules installed in the base

e inserting or removing a module. Failur

e to do so may cause

potential injury to personnel or can damage equipment.

After wiring the terminal block for the HSC, restore power to the base.

Wire

Gauge: 22–16

1cm

(0.4 in.)

2-8

Installation

Stud

Size: #4 (2.5mm)

Amp Part#: 321462

Stud

Size: #4 (2.5mm) Amp Part#: 327891 (Specify 2pt. connector)

Figure 2-4 W

Max. Width: 5.54 mm (.218 in.)

Max. Width: 4.62 mm (.182 in.)

iring Guidelines

Series

and Encoder Module User

505 High Speed Counter

’

s Manual

5–24 VDC

Sinking

Driver

Encoder

5–24 VDC

Ch1 A– Ch1 B– Ch1 RST– Ch1 INH–

+ –

Ch1 Y1 Ch1 Y2

Ch2 A– Ch2 B– Ch2 RST– Ch2 INH–

Ch1 A+ Ch1 B+ Ch1 RST+ Ch1 INH+

Ch2 A+ Ch2 B+ Ch2 RST+ Ch2 INH+

5–24 VDC

Sourcing

Driver

5–24 VDC



Series

505 High Speed Counter

and Encoder Module User

+ –

Ch2 Y1 Ch2 Y2

Figure 2-5 Sample Ter

’

s Manual

minal Block W

iring Diagram

Installation

2-9

2.5 Logging the Module into the Controller

2.5.1 Updating

the I/O Configuration Definition

2.5.2 Selecting the I/O Configuration

After inserting the module into the base, update the I/O configuration in the controller

. The module does A VPU or other programming device must be connected to the controller to register and verify controller module communication.

W

ith your VPU or other programming device, select the I/O Configuration option. For example, if you have the module inserted into the first slot of the first I/O base, configure it as displayed in Figure 2-6. Refer to the manual that came with the programming device for instructions.

not

automatically onfigure itself.

I/O Address

The

HSC module is logged in as three input words (WX) and five output words (WY).

I/O MODULE DEFINITION FOR :

I/O

Number of Bit and W

Base Number

Displays number of the current base.

CHANNEL 1

ord I/O

BASE 00

Special

Slot Address X Y WX WY Function

0001

.....

1

0000

.....

2

0000

.....

3

0000

.....

4

0000

.....

5

0000

.....

6

0000

.....

7

0000

.....

8

.....

Slot Number

Install

the HSC into any avail able I/O slot on the Series 505 base.

00 00 00 00 00 00

00 00

03 05

..

00

..

00

..

00

..

00

..

00

..

00

..

00

..

00

..

-

..

00

..

00

..

00

..

00

..

00

..

00

..

00

..

00

SF Module

The HSC is not an SF

.......

Module. The default for this definition is

NO.

No No No No No No

No No

2-10

Installation

Figure 2-6

Sample I/O Definition Chart

Series

and Encoder Module User

505 High Speed Counter

’

s Manual

2.5.3 Viewing

the I/O Use SHOW to view the I/O Configuration Chart. If the HSC is

Configuration Chart

installed in slot 1, for channel 1, base 00, the I/O chart will appear as displayed in Figure 2-7.

I/O CONFIGURA

Slot 1 Slot 2 Slot 3 Slot 4 Slot 5 Slot 6

WX001 WX002 WX003 WY004WY005 WY006 WY007 WY008

00000 00000 00000 00000 00000 00000 00000 00000 00000 00000 00000

00000

TION CHART FOR :

I/O POINTS

00000 00000 00000 00000

Figure 2-7

00000 00000 00000 00000

I/O Configuration Chart

00000 00000 00000 00000

CHANNEL 1, BASE 00

00000 00000 00000 00000



Series

505 High Speed Counter

and Encoder Module User

’

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Installation

2-11

Chapter 3

Programming

3.1 Controller Input Words 3-2.

3.1.1 WX1

3.1.2 WX2

3.1.3 WY4

3.1.4 WY5

3.1.5 I/O

(Status W and WX3 (Channel Count) (Setup W – WY8 (Pr

Update Consideration

ord) 3-2.

ord) 3-3.

eset W

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ords) 3-4.

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-3.

3-4.



Series

505 High Speed Counter

and Encoder Module User

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s Manual

Programming

3-1

3.1 Controller Input Words

The

HSC module is configured as three word inputs (WX) and five word outputs (WY). It occupies eight words of the controller’s word image register.

3.1.1 WX1 (Status W

ord) W

each of the two channels. Figure 3-1 shows the format of the status word.

ord 1 (WX) is the module’

BIT

s status word. Eight bits provide the status of

MSB

LSB

10 11 12 13

14

15 16

1 2 3

4

5 6 7

8

CH 1 — RESET ST CH 1 — INHIBIT ST

ATUS

ATUS CH 1 — OUTPUT 1 ST CH 1 — OUTPUT 2 ST CH 2 — RESET ST CH 2 — INHIBIT ST

ATUS

ATUS CH 2 — OUTPUT 1 ST CH 2 — OUTPUT 2 ST

(1 = Counter reset)

(1 = Count inhibited) ATUS ATUS

(1 = On)

(1 = Counter reset)

(1 = Counts inhibited) ATUS (1 = On) ATUS (1 = On)

9

Reserved and will be returned as zeros

3-2

Programming

 

the channel’

s RESET field input is active, this bit will be 1; otherwise this

bit will be 0.



af

The Reset Command bit (see Setup Word, Section 3.1.3) does not

fect the r

eset status bit.

Figure 3-1

Status Word For

mat

Each channel has a Reset Status bit in the status word. If

Series

and Encoder Module User

505 High Speed Counter

’

s Manual

Inhibit Status. Each the channel’ (see Setup W

s

ord, Section 3.1.3), this bit will be 1 and the counter will not

channel has an Inhibit Status bit in the status word. If

Inhibit

field input is active or if its Inhibit Command bit is 1

count. Otherwise, this bit will be 0.

3.1.2 WX2 and WX3 (Channel Count)

3.1.3 WY4 (Setup W

ord) W

Output Status.

Each channel has an Output 1 Status and an Output 2 Status bit in the status word. If the corresponding field output is on, the bit will be 1. Otherwise, the bit will be 0.

W

ord 2 (WX2) register count register

, and W

contains

ord 3 (WX3)

the current value of the Channel 1 count

contains

the current value of the Channel 2

. These values are unsigned integers between 0 and 65,535

(inclusive).

ord 4 (WY4) is the module setup word. The controller uses eight bits to control the HSC module’

s operation. See Figure 3-2.

BIT

MSB

CH 1 — RESET

1 2

CH 1 — INHIBIT

3

CH 1 — OUTPUT 1

4

CH 1 — OUTPUT 2 CH 2 — RESET

5 6

CH 2 — INHIBIT CH 2 — OUTPUT 1

7

CH 2 — OUTPUT 2

8

(1 = Reset counter; default: 0) (1 = Inhibits counts; default: 0)

0: Count  P = On (default)

1: Count < P = On (1 = Reset counter; default: 0) (1 = Inhibits counts; default: 0)

0: Count  P = On (default)

1: Count < P = On

9

10

11

12

Reserved and should be set to 0 (off)

13 14 15

LSB

16



Series

505 High Speed Counter

and Encoder Module User

’

s Manual

Figure 3-2

Setup Word For

mat

Programming

3-3

Controller Input Words (continued)

Reset Command. Both

channels have a Reset Command bit. A transition from 0 (off) to 1 (on) of the Reset Command acts as a one-shot (providing a momentary reset of the channel), setting the count to 0. Even though the bit remains 1, counting resumes.

Inhibit Command.

Both channels have an Inhibit Command bit. When this

bit is set to 1, the channel stops counting.

NOTE:

differ will change accor inputs ar

When in the pulse counter mode, if the A or B input is in a

ent state at the beginning and end of an inhibit signal, the count

e in dif

ding to the nor

fer

ent states, the change may be as much as two

mal counting logic. If both A and B

counts.

Output Level.

The output level bit specifies when the outputs for each

channel turn on.



Setting the output level bit to 0 turns the output on when the current count is greater than or equal to the preset. If the current count is less than the preset, the output is off.



Setting the output level bit to 1 turns the output on when the current count is less than the preset. If the current count is greater than or equal to the preset, the output is off.

3.1.4 WY5 – WY8 (Pr

eset W

ords) Y

W

ords WY5 through WY8 specifies preset values for each channel.

ou can specify any value between 0 and 65,535.

 WY5

 WY6

 WY7

 WY8

specifies the value for Preset 1, Channel 1. specifies the value for Preset 2, Channel 1. specifies the value for Preset 1, Channel 2.

specifies the value for Preset 2, Channel 2.

3.1.5 I/O Update In each scan, the controller reads the module WX words before updating Consideration

the WY words. For example, during a scan when the controller resets the module, the WX word(s) contain counter values existing prior to the reset.

3-4

Programming

Series

and Encoder Module User

505 High Speed Counter

’

s Manual

Chapter 4

Troubleshooting

Symptom

Input LED is not on and Output LED is not on

Counts in wrong direction

Incorrect count

Counts erratically

Does not count

Probable Cause Corrective Action

No power to board

Problems with input signals, or output being reset or inhibited

Connections wrong Input wires substantially

dif

ferent lengths Connections wrong Input wires substantially

dif

ferent lengths Broken wire

Wrong quadrature mode or 2 jumpers on same chan nel

Signal wire noise Broken wire

Count being reset or in hibited

-

Re-seat board Check for bent pins on board connector Check your base power supply

Check wiring Check encoder or field inputs

Check Reset and Inhibit bits in Setup word (WY4) Reverse wiring for inputs A and B Check that wires are as short as possible, and make

wires the same length (if possible) T

race wiring connections

Check that wires are as short as possible, and make wires the same length (if possible)

Check continuity Check jumper position

-

and condition of jumper (metal insert intact) See wiring considerations ( Section 2.1.4)

Check continuity Check Reset and Inhibit signals from field

Check Reset and Inhibit bits in Setup word (WY4)

Broken wire

Counts too fast or too slow

Controller does not communicate with module

Nonfatal error as a result of the module



Series

505 High Speed Counter

and Encoder Module User

Pulse too narrow frequency too high

Module not configured in controller I/O configuration table

Module configured incorrectly in controller

Module has failed self-diagnostics

’

s Manual

, or

Check continuity Use slower gear ratio and

higher resolution count Check quadrature mode Check signal wire noise Marginal input signal

Configure module

Reconfigure the module

Return module for repair

Troubleshooting

4-1

4.1 Checking the Operation of the Module

To

check the operation of the module, follow these steps.



1.

2.

Module outputs will turn on during this procedure.

Using a programming device, force all presets to 0.

Reset both counters through the reset signals from your application.

Using the default configuration, the outputs should turn on.

3.

Using your programming device, force the presets to any number greater than 0.

The outputs should turn off.



Before resuming normal operation, clear any words that you have forced. Otherwise, these words remain forced during operation and could yield unexpected results.

If you used the setup word to configure the module, then the output follows your configuration.

4-2

Troubleshooting

T

o check the output operation look at the counter status word (WX1), the

outputs correspond to the following bits.

Channel 1, Output 1 bit 3 Channel 1, Output 2 bit 4 Channel 2, Output 1 bit 7

0 = Output of 1 = Output on

f

Channel 2, Output 2 bit 8

Series

and Encoder Module User

505 High Speed Counter

’

s Manual

Chapter 5

Applications

5.1 Sprayer Example 5-2.

5.1.1 Description 5-2.

5.1.2 Solution 5-3

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5.2 Flow Rate Example 5-5.

5.2.1 Description 5-5.

5.2.2 Solution 5-5

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5.3 Tank Filling Example 5-6.

5.3.1 Description 5-6.

5.3.2 Solution 5-6

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .



Series

505 High Speed Counter

and Encoder Module User

’

s Manual

Applications

5-1

5.1 Sprayer Example

5.1.1 Description A

reversible DC motor drives a paint sprayer up and down a vertical assembly relative position of the sprayer enable the sprayer during a pre-defined section of travel. (See Figure 5-1.) The encoder resolution is 500 cycles per revolution. One shaft revolution equals 1 inch of sprayer travel. When encoder signal A leads, the direction of travel is up.

. A quadrature encoder on the drive shaft senses the direction and

. Channel 1 of the HSC will be used to

LS2 – Reverse Motor

“Stop Spray”

“Start Spray”

LS1 – (Home) Reverses Motor

Figure 5-1

Sprayer Application

5-2

Applications

Series

and Encoder Module User

505 High Speed Counter

’

s Manual

5.1.2 Solution Connect

5–2. Limit switch 1 (sprayer home) drives channel 1 Reset. Channel 1 outputs 1 and 2 are wire ORed and drive the sprayer enable. Select 1X Quadrature mode for channel 1, setup channel 1 output 1 to turn off when count

 preset, are loaded with the Start Sprayer and Stop Sprayer counts, respectively The Start Sprayer count = 500 X Distance (inches) from LS1 to Start Sprayer position. The Stop Sprayer count = 500 X Distance (inches) from LS1 to Stop Sprayer position.

encoder signals A and B to inputs A and B of the HSC. See Figure

output 2 to turn on when count  preset. Presets 1 and 2

.

HSC

Channel 1

Encoder A Encoder B

LS1

Input A Input B

Reset

Spray

Enable

Output 1 Output 2

Figure 5-2

HSC Connections

As the sprayer moves up and down, the channel 1 outputs and the sprayer enable signal levels produce the waveform shown in Figure 5-3.

T

Sprayer

OUTPUT OUTPUT

Travel

1 2

ravels Up

LS1 P1 P2 LS2 P2 P1 LS1

T

ravels Down



Series

505 High Speed Counter

and Encoder Module User

Sprayer Enable

’

s Manual

OFF

ON

Figure 5-3 Wavefor

OFF

m Patter

ON

n

Applications

OFF

5-3

Sprayer Example (continued)

CLEAR CHANNEL SETUP

WORD

SETUP

1

CHANNEL OUTPUT LOW AT PRESET

2 TO GO

1

SELECT

COUNT INHIBIT ON CHANNEL

1

C12C1

LDC1

A:N=WY4

0

LOADS CHANNEL PRESETS 1 & 2 FROM V200 & V201

1

MOVW1

A:N=V200 B: WY5

2

Figure 5-4 Ladder

BITS1

A:N=WY4

4

INHIBIT

CHANNEL

BIT

IS CLEARED

COUNTING IS ENABLED

1

BITC23

A:N=WY4

2

Logic for Sprayer Example

BITS2

2

C15C14

5-4

Applications

Series

505 High Speed Counter

and Encoder Module User

’

s Manual

5.2 Flow Rate Example

5.2.1 Description A

5.2.2 Solution

flow meter outputs 200 pulses per gallon. The program requires

calculation of flow rate in gallons per minute (GPM). Configure the HSC as WX9–WX1

flow meter 1-second fast timer GPM by the following calculation (using the controller memory locations).

Equation: GPM = Pulses per Sec  60 ? 200 Program Locations: (V23,V24) = (WX10)  (V20) ? (V19)

1, WY12–WY16. Attach channel 1 to the

. The HSC accumulates flow meter pulses for the duration of a

. In the controller

, accumulated pulses are scaled to

Following each calculation, reset the HSC, restart the T a new calculation 1 second later

: ONE

C23

C24

C25

SECOND TIMER HAS EXPIRED, COMPUTE FLOW

RESTAR

:

SCALE COUNTER V IN LOCA

:

TURN OFF CHANNEL 1 RESET T

T TIMER ON NEXT SCAN

TMRF2

P= 01.000

TIONS V23–V24, RESET HSC CHANNEL 1

MULT1

A: WX10 B:C:V20

V21

BITC1

A:N=WY12

.

ALUE IN GALS/MINUTE PUT RESUL

DIV1

A: V21 B:C:V19

V23

O HSC

A:N=WY12

imer

, and perform

TS

BITS1

1

C23C20

C24C23

C25C23



Series

505 High Speed Counter

and Encoder Module User

’

s Manual

1

Figure 5-5 Ladder

Logic for Flow Rate Example

Applications

5-5

5.3 Tank Filling Example

5.3.1 Description The

HSC module measures the volume of liquid and control the filling valve. (See Figure 5-6.) A flow meter connected to the HSC channel 2, input A. Output 2 controls the filling valve. In this example, the HSC operates in the pulse counter mode.



Solution

A count of 100,000 pulses is required to fill the tank to 500 gallons. As this would overflow the HSC, the following RLL is used to count 10 sets of 10,000 pulses before closing the filling valve. In this program, output 1 is used to indicate 10,000 pulses. Since the HSC runs asynchronous to the PLC, the program accumulates overcounts for each loop and adjusts the final loop to reach the exact count. The program utilizes the fact that the HSC WX’

Several V memory locations are used in the program, their initial values are:

s are read before the WY’

, generating 200 pulses per gallon, is

s are written in an I/O cycle.

V200 = 10,000 = V201 = 30,000 = V100 = 0

Input A

Output 2

HSC Channel 2

Y20

channel 2, preset 1 channel 2, preset 2 initial value (overcounts will be accumulated here)

5-6

Applications

Figure 5-6 T

ank Filling Application

Series

and Encoder Module User

505 High Speed Counter

’

s Manual

C140

C140 IS USED T

O INITIA

TE/TERMINA

TE FILLING

X128

C140 C256

C1

C140

C141

C1

: RESET HSC, LOAD INIT

Y20

LDC4

A: WY4

N = 0

: CLEAR RESET BIT

BITC1

A: WY4

AL PRESETS

BITS1

A: WY4

N = 5

C140

C1

MOVW1

A: V200 B: WY7

N = 2

C141

N

Y20

C1

Y20 C140

: ENABLE LIQUID FLOW



Series

505 High Speed Counter

and Encoder Module User

= 5

Figure 5-7 Ladder

’

s Manual

Logic for T

ank Filling Example

Y20

Applications

5-7

Tank Filling Example (continued)

C61

C8

C256

C51

C140

C8

: ACCUMULA

: AFTER

AND LOAD THE REMAINING COUNT INT

:

TEST FOR COMPLETION OF 100,000 COUNTS, INHIBIT FUR COUNTS, AND CLEAR OVERCOUNT ACCUMULATOR. C256 WILL THEN TURN OFF C140 AND DISABLE THE V

TE THE OVERCOUNTS

SUB1

A: WX3 B: V200

C: V101

90,000 PULSES, SUBTRACT THE OVERCOUNTS FROM 10,000

CTR2

P =

9

BITP2

A: WX1

ADD1

A: V101 B: V100

C: V100

BITS2

A: WY4

O PRESET 2.

SUB2

A: V200 B: V100

C:

WY8

ALVE.

THER

LDC3

A: V100

MOVW2

A: V201 B: WY7

N = 1

C61

C8

C256

C51 :

5-8

C51

C8 Y20

Applications

N = 6N = 8

WHEN HSC CH2 OUTPUT 1 TURNS ON, PULSE COUNT IS 10,000 OR GREA

Figure 5-7 Ladder

TER, RESET COUNTER AND START NEW COUNT

BITP5

A: WX1

N = 7

Logic for T

ank Filling Example (continued)

N = 0

.

BITS5

A: WY4

N = 5

and Encoder Module User

Series

505 High Speed Counter

C51

’

s Manual

Appendix A

Terminal

Block W

orksheet



Series

505 High Speed Counter

and Encoder Module User

’

s Manual

T

erminal Block W

orksheet

A-1

Appendix B

Specifications

B.1 Environmental Specifications B-2. B.2 Electrical Specifications B-3. B.3 Additional Compliances B-6.

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .



Series

505 High Speed Counter

and Encoder Module User

’

s Manual

Specifications

B-1

B.1 Environmental Specifications

T

able B-1

Environmental

Specifications

Operating T Storage T

emperature 0_

to 60_C (32_ to 140

emperature –40_

_F)

to 70_C (–40_ to 158 Relative Humidity 5% to 95% noncondensing Pollution Degree

2, IEC 664, 664A

Vibration

Sinusoidal

IEC 68–2–6, T

est Fc;

0.15 mm, peak-to-peak, 10-57 Hz;

1.0 g 57-150 Hz

Random NAVMA

T

T P–9492 or IEC 68–2–34,

est Fdc with

0.04 g@/Hz, 80–350 Hz, and 3 dB/octave rolloff, 80–20 Hz and 350–2000 Hz at 10 min/axis

Impact Shock

Electrostatic Discharge Electrical Noise Immunity IEC 801, Part 4, Level 3

Conducted

2

IEC 68–2–27, T Half Sine, 15 g, 1

est Ea;

1 ms

IEC 801, Part 2, Level 4 (15 kV)

MIL STD 461B, Part 4; CS01, CS02, CS06 IEC 255–4, Appendix E

1

EEC 4517/79 Com(78) 766 Final, Part 4 IEEE 472, 2.5 kV

_F)

1

B-2

Specifications

Radiated

IEC 801, Part 3, Level 3 MIL STD 461B, Part 4; RS01, RS02

Corrosion Protection

All parts are of corrosion resistant material or are plated or painted as corrosion protection.

Agency Approvals

1

The

unfilltered reset input may be susceptible to these types of EMI.

2

The module responds to noise signals at its count or inhibit inputs that are within its passband.

ULr

Listed, CSA Certified

Series

and Encoder Module User

505 High Speed Counter

’

s Manual

B.2 Electrical Specifications

Count Inputs

Frequency (maximum)

Duty Count Mode

Cycle Freq. Freq. (w/ 15 max. phase error)

T

able B-2

Electrical

Specifications

Quadrature Mode

10% 20% 25% 30% 40% 50% 60%

On voltage: Current on: Of

f voltage:

10 Khz 25 Khz 30 Khz 10 Khz 35 Khz 12 Khz 50 Khz 15 Khz 45 Khz 15 Khz 35 Khz 15 Khz

4 to 28 VDC, Class 2 supply 8 to 16 mA –1.5 to 1.5 VDC

Current off:0 to 1 mA

V

olt–Ampere Curve for Count Inputs

30

25

20

Vin (Volts)

15

4 Khz 8 Khz

Min Max



Series

505 High Speed Counter

and Encoder Module User

’

s Manual

10

Off

5

Region

2

4 6810 12 14 16

Iin (mA)

T

ransition Region

On Region

Specifications

B-3

Electrical Specifications (continued)

Count inputs are constant current type inputs.

Reset

and Inhibit Inputs:

Vin (Volts)

30

25

20

15

On voltage: Current on: Of

f voltage:

to 28 VDC, Class 2 supply 2 to 40 mA

–1.5 to 1.5 VDC Current off:0 to 0.75 mA Reset delay time:

unfiltered filtered

Inhibit delay time:

200 s on 200 s of

Volt–Ampere

Curve for Reset and Inhibit Inputs

Min Max

950 s on 950 s of

3.75 ms on

5.00 ms of

f

B-4

Specifications

10

5

10 20 30 40

Iin

(mA)

Off

Region

T

ransition Region

On Region

Series

and Encoder Module User

505 High Speed Counter

’

s Manual

Outputs

User

voltage:

Voltage drop: Leakage current:

Peak current:

.

. . . . . . . . . . . . . . .

Output current:

.

. . . . . . . . . . . . . . . . . . . . . . . .

.

. . . . . . . . . . . . . .

.

. . . . . . . . . . . .

1.8 VDC max. @ 400 mA

1.0

VDC max. @ 25 mA 500 A max. 500 mA for 1 ms

28 VDC max.

I(mA)

400

300

200

100

Isolation:

User-side Channel Channel Inputs

1

Point per channel

275

mA

2 Points per channel

175 mA

20 40 60 80 100

T (C)

to P/C-side 1 to 2 (inputs) 1 to 2 (outputs)

to outputs 1500 V rms

.

. . . . . . . . . . . . . . . . . . .

.

. . . . . . . . . . . . . . . . .

.

. . . . . . . . . . . . . . . .

.

. . . . . . . . . . . . . . . . . . . . . . .

1500 V rms 1500 V rms 0 V rms



Series

505 High Speed Counter

and Encoder Module User

Power

Required from Base:

Response Time (Input

pulse to output action)

’

s Manual

.

. . . . . . . . . . . . . . . . .

.

. . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.5 W

1.1 ms

Specifications

B-5

B.3 Additional Compliances

In

addition, the system complies with applicable requirements of V

Deutscher Elektrotechniker (VDE) 0160: Electrical Equipment

Series 505 products have been developed with consideration of the draft standard for programmable controllers as described in the proposed standard of the International Electrotechnical Commission Committee (IEC–65A/WG6, Part 2).

Information concerning product reliability and compliance to the IEC or other standards can be provided upon request. Contact your Siemens Industrial Automation, Inc. distributor for additional information.

erband

B-6

Specifications

Series

and Encoder Module User

505 High Speed Counter

’

s Manual

Customer

We would like to know what you think about our user manuals so that we can serve you better. How would you rate the quality of our manuals?

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Your Name: Title: Telephone Number: ( ) Company Name: Company Address:

Manual Manual Assembly Number: Order Number:

Name:

High Speed Counter and Encoder Module User Manual

PPX:505–8113–2

Edition: Second

2586546-0019 Date: 12/92

FOLD

BUSINESS REPL

FIRST CLASS

POST

AGE WILL BE P

Y MAIL

PERMIT NO.3

AID BY ADDRESSEE

JOHNSON CITY

, TN

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ATTN: Technical Communications M/S 3519

FOLD

NO POST

NECESSARY

IF MAILED

IN THE

UNITED ST

AGE

ATES

Index

A

Assistance, 2-2

C

Configuration

selecting, 2-10 updating, 2-10

Configuring

jumpers, 2-5

User Options, 2-10 Count input, 1-4 Count rate, 1-2 Counter mode, 1-7

D

I

I/O

address, 2-10 configuration chart, 2-1

definition chart, 2-10 I/O base, 2-7 Inhibit, 1-2, 1-4 Input, 1-4

count, 1-4

inhibit, 1-4

reset, 1-4

Specifications, B-3

J

Jumper, 2-5 Jumper pins, 2-5

L

1

Double-count quadrature, 1-9

E

Electrical specifications, B-3 Environmental specifications, B-2

F

Features, 1-2

H

Handling the HSC, 2-2



LED, 1-2

A input, 1-6

B input, 1-6 LED indicator Logging module into controller

, 1-6

O

Output, 1-5

open collector

specifications, B-5

, 1-5

P

Powering up the module, 2-8 Pulse counter mode, 1-7 Pulse width, 1-2, B-4

, 2-10

Index-1

Q

T

Quadrature Mode, quadruple count, 1-10 Quadrature mode

double-count, 1-9 single-count, 1-8

Quadruple count, quadrature mode, 1-10

R

References, 2-2 Reset, 1-2, 1-4

S

Single-count quadrature, 1-8 Static electricity

, 2-2

T

erminal block, 2-8

wiring diagram, 2-9

worksheet, 2-8

U

Using status words, 3-2

W

iring, 2-3, 2-8

considerations, 2-3

Index-2

SIMATIC Series 505 and TISOFT are trademarks of Siemens Industrial Automation, Inc. T TI505, TI525, TI535, and TI545 are trademarks of T UL is a registered trademark of Underwriters Laboratories.

is a registered trademark of Siemens AG.

exas Instruments and TI are registered trademarks of T

exas Instruments Incorporated.

Siemens High Speed Counter and Encoder Module SIMATIC 505 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Contents

Overview

1.1 Features

1.2 Inputs

1.3 Outputs

1.4 LED Indicators

1.5 Counting Modes

Pulse Counter Mode

1X Quadrature

Quadrature Mode

2X Quadrature

4X Quadrature

Installation

2.1 Before Installing the Module

Handling the Module

2.2 Selecting Counter Operation

2.2.2 Selecting the Reset Filter

2.3 Inserting the Module in the I/O Base

2.4 Wiring the Module

2.4.2 Powering Up the Module

2.5 Logging the Module into the Controller

2.5.2 Selecting the I/O Configuration

Programming

3.1 Controller Input Words

3.1.2 WX2 and WX3 (Channel Count)

Troubleshooting

4.1 Checking the Operation of the Module

Applications

5.1 Sprayer Example

5.1.1 Description A

5.1.2 Solution Connect

5.2 Flow Rate Example

5.2.1 Description A

5.2.2 Solution

5.3 Tank Filling Example

5.3.1 Description The

Solution

B.1 Environmental Specifications

B.2 Electrical Specifications

B.3 Additional Compliances

Index