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Installation and Operation Manual
Single and Dual Channel Modbus RTU, Single Port ModbusTCP
1. Overview
The Triac Modbus modules are a plug-in option module for use with the
TMC4 controller providing communication with the TMC4 control card
through Modbus RTU or ModbusTCP protocol. The TCP module, item
TMC-4C006-002, is available with a single port connection. The RTU
module is available in both a single isolated channel, item TMC-4C005-
001, and dual isolated channel, item TMC-4C005-003. The dual channel
module supports communication via two independent ports under one ID.
This dual channel configuration is useful for operating physically redundant
networks. Wiring, communication parameters, and best practices are all
common between the single and dual channel module operation.
Features
RTU Modules
•
Addresses from 1 to 246
•
None, Odd or Even parity
•
9600, 19.2k, 57.6k, 115.2k baud rates
TCP Module
•
IP parameters configurable via TMC4 menus or by terminal
program with on-board USB connection
•
Supports up to 8 concurrent connections.
Installation
The TMC4 Modbus module is installed in the TMC4 control board option
module slot using (2) 4-40 x 1/4" screws. Insert card edge in the mini PCI
express connector and rotate module flat to secure with the screws.
Insert option module into
connector and rotate flat. Tighten
with #4-40 x 1/4" fasteners.
www.atcontrols.com
TMC4 Modbus Module
1
Modbus RTU and TCP Modules
Installation & Operation Manual
Single Channel
TMC-4C005-001
Dual Channel
TMC-4C005-003
ModbusTCP
TMC-4C006-002
11/10/22
IOM08147 REVISION 03
TMC4
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Summary of Contents for TRIAC TMC4
- Page 1 Single and Dual Channel Modbus RTU, Single Port ModbusTCP 1. Overview The Triac Modbus modules are a plug-in option module for use with the TMC4 controller providing communication with the TMC4 control card through Modbus RTU or ModbusTCP protocol. The TCP module, item TMC-4C006-002, is available with a single port connection.
- Page 2 TMC4 Modbus RTU and TCP Modules Installation & Operation Manual Wiring The wiring pinout for the RTU single channel and RTU dual channel module is shown below. The TCP module only requires RJ45 connection. COM1 A RJ45 COM1 B...
- Page 3 TMC4 Modbus RTU and TCP Modules Installation & Operation Manual 2. Network Modbus RTU modules communicate over RS-485 network. For best results using either of the RTU modules, a RS-485 cable with recommended 120Ω characteristic impedance should be used for network wiring. For the dual channel RTU module, separate RS-485 communication cables must be used for both Network 1 and Network 2 as shown.
- Page 4 TMC4 Modbus RTU and TCP Modules Installation & Operation Manual Network Topology The Modbus RTU module should be wired in either a daisy chain topology, or a bus/backbone with stubs for best results. If backbone with stubs topology is used, the length of stubs should be kept as short as possible. Star, ring, or combinations thereof, should be avoided.
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Page 5: Operation
Limit Switch Positioning Operation When operating with limit switches for on/off or two position control, the TMC4 Position Type setting in the POSITION CONFIG submenu should be set to Limit Switch. When operating in this mode, Bit 1 and Bit 2 in Register 40009 control the actuator direction and movement. - Page 6 Bit 1 = 0 and Bit 3 = 1. The CCW motor output is de-energized. Potentiometer Positioning Operation When operating with feedback potentiometer for proportional or modulating control, the TMC4 Position Type setting in the POSITION CONFIG submenu should be set to Potentiometer. In this mode, the actuator is controlled using the Command Position Register 40010, and the Sensitivity/Deadband Register 40013.
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Page 7: Function Codes
TMC4 Modbus RTU and TCP Modules Installation & Operation Manual 5. Modbus Function Codes The TMC4 Modbus RTU and TCP modules are a Modbus slave that supports the following Modbus functions. Code Code Code Definition (hex) 0x03 Read Holding Registers... - Page 8 TMC4 Modbus RTU and TCP Modules Installation & Operation Manual TOTAL MOTOR 40004 0x03 RUN TIME HI 65,536 – 16,711,680 Total Motor Run Time (0 – 16,777,215 when used with bit 1-8 Count Read (Upper Byte) Register 40005) bit 9-16 0 –...
- Page 9 TMC4 Modbus RTU and TCP Modules Installation & Operation Manual Status Flags 1 Register Register Number 40001 Unit Scale Range Default Register Address 0x00 Read/Write R 40001 Byte 2 (MSB) Byte 1 (LSB) B16 B15 B14 B13 B12 B11 B10 B9 B8 B7 B6 B5 B4 B3 B2 B1 The Status Flags 1 register provides flags to indicate various status and operating conditions.
- Page 10 TMC4 Modbus RTU and TCP Modules Installation & Operation Manual Total Power On Time / Firmware Register Number 40002 / 40003 Unit Scale Range Default 0 – 16,777,216 Register Address 0x01 / 0x02 Hour 0x00000000 – 0x00FFFFFF 0 – 255...
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Page 11: Current Position
TMC4 Modbus RTU and TCP Modules Installation & Operation Manual Total Motor Starts Register Number 40006 / 40007 Unit Scale Range Default 0 – 16,777,216 Register Address 0x05 / 0x06 Count 0x00000000 – 0x00FFFFFF Read/Write R 40004 40005 Byte 2 (MSB) - Page 12 TMC4 Modbus RTU and TCP Modules Installation & Operation Manual Action Bits/Flags 2 Register Register Number 40009 Unit Scale Range Default Register Address 0x08 Read/Write R / W 40009 Byte 2 (MSB) Byte 1 (LSB) B16 B15 B14 B13 B12 B11 B10 B9 B8 B7 B6 B5 B4 B3 B2 B1 The Action Bits/Flags 2 register provides individual bits for multiple operation settings as well as resettable flags used to indicate various status changes.
- Page 13 TMC4 Modbus RTU and TCP Modules Installation & Operation Manual Command Position Register Number 40010 Unit Scale Range Default 0 – 1000 (32,768 – 33,768) Register Address 0x09 0x0000 – 0x03E8 (0x8000 – 0x83E8) Read/Write R / W 40010...
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Page 14: Communication Timeout
TMC4 Modbus RTU and TCP Modules Installation & Operation Manual Reserved Register Number 40012 Unit Scale Range Default Register Address 0x0B Read/Write R / W This register is currently not used. Sensitivity/Deadband Register Number 40013 Unit Scale Range Default 1 –... - Page 15 TMC4 Modbus RTU and TCP Modules Installation & Operation Manual Reserved Register Number 40015 Unit Scale Range Default Register Address 0x0E Read/Write R / W This register is currently not used. Reserved Register Number 40016 Unit Scale Range Default...
- Page 16 TMC4 Modbus RTU and TCP Modules Installation & Operation Manual Appendix A Number System Conversion 0000 0000 0001 0000 0010 0000 0011 0000 0000 0001 0001 0001 0010 0001 0011 0001 0000 0010 0001 0010 0010 0010 0011 0010...
- Page 17 TMC4 Modbus RTU and TCP Modules Installation & Operation Manual 1000 0000 1001 0000 1010 0000 1011 0000 1000 0001 1001 0001 1010 0001 1011 0001 1000 0010 1001 0010 1010 0010 1011 0010 1000 0011 1001 0011 1010 0011...
- Page 18 ModbusTCP Configuration via Terminal Program The IP settings for the TMC4 with ModbusTCP module can be configured using the standard on-board menus. However, the TMC4 can also be configured using a computer terminal interface program through the USB connection. Note the ModbusTCP is only compatible with firmware versions 2.03 and later.
- Page 19 9. The TMC4 confirms the change is successful after each command. 10. Cycle power to the TMC4 to complete configuration of the new network settings. 11. TMC4 is now ready for ModbusTCP communications. Use a ModbusTCP master with the IP set as per above and use TCP port 502.
- Page 20 TMC4 Modbus RTU and TCP Modules Installation & Operation Manual A-T Controls product, when properly selected, is designed to perform its intended function safely during its useful life. However, the purchaser or user of A-T Controls products should be aware that A-T Controls products might be used in numerous applications under a wide variety of industrial service conditions.
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