User Guide

25
Powers
TM
IntelliStation Jr. 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
Date
Address
Format
Holding Registers
Mixed Outlet Setpoint R/W ºF 60 to 180°F Holding 40001 0
signed 16
bit, integer
Input Registers
Mixed Outlet Temperature R ºF 0 to 266°F Input 30001 0
signed 16
bit, integer
Valve Position R Vdc X 10 0 to 100 Input 30002 1
Mixed Outlet High R ºF 0 to 266°F Input 30003 2
Mixed Outlet Low R ºF 0 to 266°F Input 30004 3
High Temperature Alert Differential R ºF 10 to 30°F Input 30005 4
Low Temperature Alert Differential R ºF 10 to 30°F Input 30006 5
High Temperature Alert Count R Counts 0 to 65535 Input 30007 6
Low Temperature Alert Count R Counts 0 to 65535 Input 30008 7
Error Code R Enum
Numerical Error Code
(See Error Code List)
Input 30009 8
Model R Num 1096 Input 30010 9
Firmware Revision R Num SVN Revision Input 30011 10
Error
Code
Priority
Error
Code
Error Type Detail Cause How to Clear Control Behavior during
Error Condition
1 1 NVM Error System System Menu block
corrupted
Load defaults or go thru
the System Menu settings
Cease operation
2 2 SENSOR OPEN
or
SHORT
Faulty sensor or wiring Ensure that the sensor
wiring is correct
Check sensor
Cease operation
3 3 Valve
Selection Is
Not Set
The Valve Selection is
not set to
3
⁄4" & 1" or
-1
1
⁄2" & 2".
Go to Valve Selection
screen in System Setup
menu.
Continue operation.
Default operation is based
on
3
⁄4" & 1" coefficients.
4 4 High
Temperature
Alert
Temperature above Mixed
Outlet Setpoint plus High
Temp Alert Differential
Increase "High Temp
Alert" within the "System"
settings.
Turn on a tap to cool down
the system.
Continue operation
5 5 Low
Temperature
Alert
Temperature below Mixed
Outlet setpoint less Low
Temp Alert Differential
Decrease "Low Temp
Alert within the "System"
settings.
Check heat source
Continue operation
Error Codes