Telenetics RS-485 User Manual

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Installation, Operation and Diagnostics
for your
Communication Interface Unit
MIU(Dial or Lease Line modem with) / 485 (RS485) ~
See MIUXXX for modem Technical Data
Edition: June 17, 2003
P/N: 0049-0002-010 rev A
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TABLE of CONTENTS
1.PRODUCT OVERVIEW .........................................................................Page 1
2.PRODUCT DESCRIPTION ....................................................................Page 1
3 SERIAL CONNECTOR SPECIFICATIONS............................................. Page 2
4.POWER SUPPLY SPECIFICATIONS ..................................................... Page 4
5.RS485 SPECIFICATIONS ..................................................................... Page 5
6.ENVIRONMENTAL SPECIFICATIONS.................................................. Page 6
7.APPROVALS ........................................................................................ Page 6
DRAWING - STANDALONE MODEMS.................................................. Sheet 1
MIU/485 CONFIGURATIONS .......................................... Sheet 2
APPENDIX A: CONNECTOR PIN DEFINITIONS...................................... Page A-1
APPENDIX B:SETUP CONFIGURATION ..................................................Page B-1
APPENDIX C:DIAGNOSTICS .................................................................. Page C-1
Installation, Operation & Diagnostics Edition: June 17, 2003Install Op and Diags for MIU Modems and RS485 (0049-0002-010A)
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1. PRODUCT OVERVIEW
The CIU (MIU\XXX485) is an industrial modem with an RS -232 to RS485 converter module for direct connection to industrial RS485 Interface units. Though similar to commercial modems, the MIUXXX\485 contains special features that make it particularly well suited for industrial applications. (MIUXXX is for any dial or lease line modems such as MIU14.4L) These capabilities include:
Environment
The CIU has been designed explicitly for use in industrial environments.
In addition to an extended temperature range (-40 to +85o C), the MIUXXX\485 includes surge, shock, vibration, and safety parameters superior to those of conventional commercial modems.
Industrial
The CIU uses standard industrial connectors for RS485 data and RS232
interfaces. These connectors allow reliable interconnect to other industrial components. Furthermore, the CIU data lines are provided at RS-232 and RS485 signal levels for both stand-alone and embedded applications.
2. PRODUCT DESCRIPTION
The CIU provides Dial telephone communication capabilities for the industrial
environment. It can be operated stand-alone or as a component of a larger industrial system.
2.1 Telephone Interface
The CIU telephone interface operates over two wire lines available in North America. The
telephone line interface is environmentally benign, allowing use in Class I, Division 2 applications.
2.2 Data Interface
The CIU data interface provides RS-232 compatible serial signaling. The data interface
interconnects to industrial controllers at RS-232E, RS422 or RS485 data interface are available as options.
2.3 Power
The MIU accepts either regulated 48.0 to 220 volts DC, or regulated 48.0 to 220 volt AC
power inputs. Unregulated 12.0 to 24.0 volt DC power input is available as an option.
2.4 Mechanical
The CIU consists of two printed circuit boards: A single two sided baseboard and a
RS485 module is a single two sided package 5-3/8 x 4 x 1-3/8 suitable for desktop or wall mounting.
2.5 Surge
The MIUXXX\485 has double the surge protection of IEC801-4 voltage
requirements. (5KVac)
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3. MIU'S LED, SWITCH & SERIAL CONNECTOR SPECIFICATIONS
The CIU/485 communicates with industrial controllers through RS -485 compatible serial
signaling. The RS-485 signal levels are used to interconnect with RS-485 compatible embedded controllers. The RS -232E signal levels are used to configure the CIU. The RS ­232E signal levels are also used to interconnect with RS-232E compatible embedded controllers if required.
The RS-232E is present on DB9(MIU), RS485 signal levels are available via four pins'
connectors.
4.1 The following lists the CIU/485 serial interfaces. All connector definitions are described in Appendix A
RS-232 Configuration Connector (P2)
Connector Type: DB9, (MIU) female, straight board mounts. Signal Levels: RS-232
RS485 Configuration Connector (P1)
Connector Type: 4 pin terminal header with .138 spacing Signal Levels: RS485
3.2 MIU/485 LED
LED Blinks every 4 seconds with AC / DC power
3.3 MIU/485 LED & Switch 1 (internal)
S1-1 Closed (ON) LED Blinks with option CD (&C1 AT command) active S1-2 Closed (ON) LED Blinks AC. DC Power ON Note select either 1 or 2 S1-3 Closed, option modem DTR select DB9 DTR S1-4 Clos ed, option modem DTR select modem's CD
3.4 MIU/485 Switch S3 (external)
S3-2 Closed (ON) only for MIU/485 (J1) modem configuration or for RS232 embedded controllers. S3-1,-3 &-4 Open (OFF)
S3-1 Closed (ON) only for MIU/485 (P1) RS485 connec tor (RS485 embedded controllers) S3-2,-3 &m-4 Open (OFF)
3.5 MIU/485 A switch (external)
SA-1 Closed (ON) RS485 received data disable TX (Driver Output Enable) SA-2 Closed (ON) RS485 transmit data enable TX (Driver Output Enable) + 5ms SA-3 Closed (ON) RS485 RTS enable TX (Driver Output Enable) should be Open (OFF) SA-4 Closed (ON) RS485 received data is disables with TXD
Install Op and Diags for MIU Modems and RS485 (0049-0002-010A) Page 2 of 16
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3.5 MIU/485 B switch (external)
SB-1 Closed (ON) RS485 Received RX & /RX DC terminated with SB-2 Closed SB-1 Open (OFF) RS485 Received RX & /RX AC terminated with SB-2 Closed SB- 2 Closed (ON) RS485 Received RX & /RX terminated SB- 2 Open (OFF) RS485 Received RX & /RX high impedance (Z) SB-3 & 4 Closed (ON) 2- wire configuration or loopback mode SB-3 & 4 Open (OFF) 4- wire configuration
Install Op and Diags for MIU Modems and RS485 (0049-0002-010A) Page 3 of 16
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4. POWER SUPPLY SPECIFICATIONS
The MIUXXX/485 contains a low quiescent power regulator. TheMIUXXX/485 also has
a "low power" standby mode which minimizes overall power requirements when the MIUXXX/485 is used intermittently.
4.1 Power Supply Selection (MIU)
Power Connector P3 (MIU)
Connector Type: 3 Pin screw - type terminal
Regulated Power Supply Range: 48.0 to 220 Volts AC/DC.
Standby Supply Currents: 200uA Active Supply Currents: 8mA to 40mA plus modem current In-Rush Current: < 250mA Reverse Protection Method: Full wave Bridge Rectifier Over-Voltage Clamp limits: Zener diode
Regulated Power Supply Range: (12 - 24VDC) is available as an option
Standby Supply Currents: 200uA Active Supply Currents: 35mA to 295mA plus modem current In-Rush Current: < 350mA Reverse Protection Method: Full Wave Bridge Rectifier Over- Voltage Clamp limits: Zener diode and TransZorb TVS
The power supply is selected through the use of
a 3-pin screw - type terminal connector.
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5. RS485 SPECIFICATIONS
MIUXXXX/485 are low -power Transceiver for RS485 and RS422 communication
Features: Point to Point or Multidrop/Multipolling Full or Half Duplex Drivers are short - circuit current limited & protected against excessive power dissipation (shutdown will places the drivers in a high - impedance state). When Drivers are disabled (by TXD), drivers will switch to high impedance state. Note in two-wire or multi-drop/multi-polling networks TX enable by TXD should be active Receiver input impedance is 12K ohms. Reduced slew- rate drivers that minimize EMI and reduce reflections caused by improperly terminated cables This will allow error - free transmitted data up to 200Kbps RS485/RS422 standard covers line lengths up to 4000 feet. For line lengths greater than 4000 feet a line repeater can be added. MIUXXXX/485 can drive 4000 feet of 26AWG twisted - pair cable at
To minimize reflections, the line should be terminated at both ends. In multi - polling/multi - drop environments (up to 32 drops) all drops off the main cable should be as short as possible. Only the Master/Host unit and the end of cable unit should be terminated.
Typical Speed versus Distance - (4-wire point to point 26 AWG twisted cable)
200k bps into 120 ohms load.
SPEED DISTANCE
1200bps 6.0 miles(9.6 km) 2400 bps 4.5 miles (7.2 km) 4800 bps 4.0 miles (5.5 km) 9600 bps 2.5 miles (4.0 km)
19,200 bps 1.8 miles (2.9 km) 38,400 bps 1.4 miles (2.1 km) 56,400 bps 1.1 miles (1.8 km)
115,000 bps 0.6 miles (0.9 km)
NOTE: Speed and distances will depend on actual operating environment.
6. ENVIRONMENTAL SPECIFICATIONS
The CIU/485 (MIUXXX\485) meets the following environmental specifications.
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Operating Temperatures -40 to 85oC
Storage Temperature -55 to 100oC
Relative Humidity 0 to 95% is non-condensing.
Altitude 20,000 ft (operating), 40,000 ft (shipping).
Vibration Effect Withstand 10 to 500 Hz at 1 g on any axis per SAMA
PMC-31-1 without damage or impairment.
ESD susceptibility Field connected circuits meet the requirements of IEC
801-2 for ESD withstand capability up to 10 KV.
EMI susceptibility Withstand 27 to 1000 MHz per IEC 801-3 level 1 (1v/m)
without damage or impairment.
EMI radiation Meets FCC Rules Part J, Subpart 15, Class A for
radiated emissions.
7. APPROVALS
The CIU/485 meets the following approvals:
Telephone: FCC Part 68
Emissions FCC Part 15
Environment UL listed (pending) for use in Class I, Division 2,
Groups C and D hazardous locations.
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SHEET TWO
RJ11 Leased Line Port
LED 1
Earth/Digital Ground (Jump pins if req’d)
DB9 Data Port
Power Connector
Power In MIU (48 to 220VAC/DC
(AC or DC)
non-polarized
Earth Gnd
Power In MIU-LV (9 to 36VDC)
Positive Voltage In
Power Ground
Earth Gnd
MIUXXX\485 Power Connection
LED ONE
Blinking = POWER ON
Steady = MODEM CONNECTED (CD)
CIU Installation, Operation & Diagnostics Edition: June 17, 2003
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SHEET TWO
B
Point-to-Point, 4-Wire: Set Switches B-3 & B-4 DOWN(OFF)
Point-to-Point, 2-Wire: Set Switches B-3 & B-4 UP(ON)
Line Terminate DC : Set Switches B-1 & B-2 UP(ON)
Line Terminate AC : set Switches B-2 UP(ON)
For LoopBack Test mode : Set Switches B-3 & B-4 UP(ON)
Set Switch A-4 DOWN(OFF)
Multi-drop (Host), 4-Wire: Set Switches B-3 & B-4 DOWN
Multi-drop (Host), 2-Wire: Set Switches B-3 & B-4 UP
Multi-drop (Slave), 4-Wire: Set Switches B-3 & B-4 DOWN
Multi-drop (Slave), 2-Wire: Set Switches B-3 & B-4 UP
Line Terminate : Set Switches B-2 & B-1DOWN (OFF) for
all Slaves except UP(ON) on unit furthest
from the Host
Switch A-1: RTS/CTS Delay: UP = 0 sec; DOWN = 7ms
Switch A-2: DOWN = TXD enables TX +5ms Select only A-2 or
Switch A-3: DOWN = RTS enables TX A-3
Switch A-4: UP(ON) = TX clamps RXD off (ON) in 2-Wire (half duplex) mode
A
B
4 3 2 1
A
B
4 3 2 1
4 3 2 1
A
4 3 2 1
4 3 2 1
Earth/Digital Ground (Jump pins if req’d) *
LED 1...
Blinking = POWER ON
Steady = MODEM CONNECTED (CD)
RJ11 Telco Port *
Power Connector
LED 1 *
RS232 Data Port (DB9 female)
for modem configuration only.
RS485
Connection
(* Not on MIU232/485 Converter)
3 & 4 always UP.
1 UP, 2 DOWN when using DB9
for modem configuration.
1 DOWN, 2 UP ~ Modem
connected to RS485. Do not
connect data to DB9
B
A
TX+ TX- RX+ RX-
4 3 2 1
MIUXXX/485 DIP SWITCH SETUP
CIU Installation, Operation & Diagnostics Edition: June 17, 2003
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APPENDIX A.
CONNECTOR
DCD 1 data carrier detect from MIUXXX\485 RD 2 receive data from MIUXXX\485 TD 3 transmit data to MIUXXX\485 DTR 4 data terminal ready to MIUXXX\485 GND 5 ground DSR 6 data set ready from MIUXXX\485 RTS 7 request to send to MIUXXX\485 CTS 8 clear to send from MIUXXX\485 RI 9 ring indication from MIUXXX\485 PGND shield protective ground
_______________________________________________________________________________
CONNECTOR spacing Interface to 4 positions Plug -in Terminal Block
TXY 1 transmit data (+) from MIUXXX\485 module TXZ 2 transmit data (-) from MIUXXX\485 module RX 3 receive data (+) to MIUXXX\485 module /RX 4 receive data (-) to MIUXXX/485 module
CONNECTOR PIN DEFINITIONS
P2
: RS-232 Configuration Connector (DB9) MIU
P1
: RS-485 Configuration Connector 4 Positions header with .138
MIUXXX/485 Installation, Operation & Diagnostics Edition: June 17, 2003
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Switch Three Setting
SW - One On
SW - Two Off
SW - Three Off
SW - Four Off
Switch
Three
DB9 (RS232)
Configuration
only
RJ11
Telco
Power
Plug
Switch
One
J2 Pin1
Jumper
3 & 4
5 & 6
7 & 8
13 & 15
Switch One Setting
SW - One Off
SW - Two On
SW - Three Off
SW - Four Off
DB 9 Connection
1 Carrier Detect
2 Received Data
3 Transmit Data
4 DTR
5 Signal Ground
6 DSR
7 RTS
8 CTS
9 Ring Indicator
Jumper 7
Pin 1
3&4
J 8
Pin 1
2 & 3
APPENDIX B. SETUP CONFIGURATION
In order to configure the MIUXXX/485 to remote RTU, Meter or Sc ada terminals the following setup is required for 2w or 4w (RS485) networks
See Fig ONE for MIUXXXX/485 layout and dip switch setting
RS485 Module
Final Factory Configuration (MIUXXXX/485) for PEXXX modem module No, Power saving modes, No Auto Reset mode Switch two ON Switch one, three and four are OFF.
MIU S3 (external)
SW-2 Closed (ON) MIU is configured for DB9 interface to Modem interface connection. SW-1, -3 & -4 Open (OFF)
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1:AT Command (MIU2400/485) (Dial) configuration is:
ATE0Q1&C1&D0S0=1&W0 E0 Echo Command disables (no "AT" response to terminal) Q1 Result Codes disable (no result codes return to terminal ring) S0=1 Auto Answer active (first ring modem will go OFF- Hook and
start answer sequence)
&C1 Carrier Detect is always True (MIU LED will be ON all the
time when Carrier Detect is ON.
&D0 DTR is ignored
2: AT Command (MIU2496/485, MIU14.4/485 & MIU28.8/485)
ATE0Q1&C1&D0&Q6S0=1&W0 E0 Echo Command disables (no "AT" response to terminal) Q1 Result Codes disable (no result codes return to terminal ring,
Connect XXX) &Q6 Normal mode (speed buffering) S0=1 Auto Answer active (first ring modem will go OFF- Hook
and start answer sequence)
&C1 Carrier Detect is always True (MIU LED will be ON all the
time when Carrier Detect is ON. &D0 DTR is ignored &K0 No flow control
3: AT Command (MIU14.4L/485) Lease Line
ATE0Q1&C1&D0&K0&Q6\M0\H1&Z3=XX&W0 Recycle power (OFF ON) Wait 5 seconds for DSR to switch ON Enter AT\S1 <CR> AT&W0 <CR> Within 45 seconds E0 Echo Command disables (no "AT" response to terminal) Q1 Result Codes disable (no result codes return to terminal ring,
Connect XXX) &Q6 Normal mode (speed buffering) \M0 Answer mode (for Remote (Slave unit) local (Master) set for
originate \M1 \H1 Lease Line mode
\S1 Security mode (if remote RTU is a dumb unit - TxD is always ON
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&Z3=XX Password to exit security mode &C1 Carrier Detect is always True (MIU LED will be ON all the time when Carrier Detect is ON. &D0 DTR is ignored &K0 No flow control
4: AT Command (MIU9.6L/485) Lease Line
ATE0Q1&C1&D0&K0&Q6\M0\H1W0 E0 Echo Command disables (no "AT" response to terminal) Q1 Result Codes disable (no result codes return to terminal ring, Connect (XXX) &Q6 Normal mode (speed buffering) \M0 Answer mode (for Remote (Slave)unit) local (Master) set for originate \M1 \H1 Lease Line mode \S1 Security mode (Not available for MIU9.6L)
&C1 Carrier Detect is always true (MIU LED will be ON all the time when Carrier Detect is ON. &D0 DTR is ignored &K0 No flow control Note &Q5 error detection and data compression can be used If the host software will support EC
Switch Setting (MIUXXX/485) (Typical)
MIU S3 (external) SW-1 Closed (ON) MIU is configured for RS485 Module (RS485 RxD (Output) to Modem TxD (input)) SW-2, -3 & -4 Open (OFF)
2- Wire Configuration on PE485 module SB-1 Closed (ON) DC Termination Open (OFF) AC Termination SB-2 Closed (ON) Lin e Termination SB-3 & -4 Closed (ON) 2- Wire
SA- 1 Open (OFF) SA- 2 Closed (ON) TxD (transmit data) enables TX (Driver Output Enable) + 5ms SA- 3 Open (OFF) SA- 4 Closed (ON) Received data is disable with TX
enable (TxD)
4- Wire Configuration for PE485 module
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SB-1 Closed(ON) DC Terminated SB-2 Closed (ON) Line Termination SB-3 & -4 Open (OFF) 4- wire
SA-1 Open (OFF) RTS follows CTS no delay SA-2 Open (OFF) SA-3 Closed (ON) RTS (always ON by MIU internal J7 (1/2) setting) enables TxEN) SA-4 Open (OFF) TxD will not disable RxD
MIU S3 (external) SW-1 Closed (ON) MIU is configured for RS485 Module (RS485 RxD (Output) to Modem TxD (input)) SW-2, -3 & -4 Open (OFF)
SA2 & SA3 can be configures for TxD enable TxEn sig nal if there are several master locations in the network. SA2 is Closed (ON) TxD (transmit data) enables TX (Driver Output Enable) + 5ms SA3 is Open (OFF) TxD will not disable RxD
MIUXXXX/485 Final Connection Ensure that MIUXXXX/485 J7 (internal jumper) 1/2 is connected
APPENDIX C.
RS485
CIU Installation, Operation & Diagnostics Edition: June 17, 2003
CONNECTION FAILURE
CONNECTOR DIAGOSTICS
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To test RS485 module set switch SB-3 & -4 Closed (ON) to loopback data to the host
modem. This test is for RS485 2- wire and 4- wire configurations.
Connect MIUXXXX/485 TXY (+) and TXZ (-) to the embedded controller RS485
DIAGNOSTICS
RS485 CONNECTION FAILURE
To test RS485 module set switch SB-3 & -4 Closed (ON) to loopback data to the host
modem. This test is for RS485 2- wire and 4- wire configurations. Connect MIUXXXX/485 TXY (+) and TXZ (-) to the embedded controller RS485 connection
MIUXXXX/485 + ------------------- + RS485 embedded controller
- ------------------- -
In some applications RS485 TXY (+) and TXZ (-) may have to be connected
to RS485 embedded controller in the following setup
MIUXXX/485 + ----------------- - RS485 embedded controller
- ----------------- +
CIU Installation, Operation & Diagnostics Edition: June 17, 2003
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