User Guide

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IntelliStation BAS Integration Manual
Modbus
®
Parameters
Modbus
®
Troubleshooting
Read= R Read/Write= R/W
Analog Input Objects
If there is no communication, check the following:
• Check that the polarity on the Modbus
®
+ and - terminals is correct
• Check that the Modbus
®
GDN terminal is securely connected.
• Check that the Baud Rate on both devices is the same.
If the communication is intermittent, check the following:
• Check that the communication cable is twisted pair type.
• Reliable communication depends on the cable length & Baud Rate used.
Long cable length may require a lower baud rate.
Parameter Red/Write Units Range Type Register Format
Holding Registers
Mixed Outlet Setpoint R/W ºF 70 to 80°F Holding 1 U16
Input Registers
Mixed Outlet Temperature R ºF 0 to 266°F Input 1 U16
Valve Position R Vdc X 10 0 to 100 Input 2 U16
Mixed Outlet High R ºF 0 to 266°F Input 3 U16
Mixed Outlet Low R ºF 0 to 266°F Input 4 U16
High Temperature Alert Differential R ºF 10 to 30°F Input 5 U16
Low Temperature Alert Differential R ºF 10 to 30°F Input 6 U16
High Temperature Alert Count R Counts 0 to 65535 Input 7 U16
Low Temperature Alert Count R Counts 0 to 65535 Input 8 U16
Error Code R Enum
Numerical Error
Code (See Error
Code List)
Input 9 U16
Model R Num 1096 Input 10 U16
Firmware Revision R Num SVN Revision Input 11 U16
Code Description
1 NVM Error
2 Faulty Mixed Outlet temperature sensor
3 High Temperature Alert
4 Low Temperature Alert
Error Codes