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FORM 155.35-ICOM2.EN.CE/GB (1018)
DATE: 10/30/2018
TABLE 9 - WRITE COMMAND
ITEM
1
Chiller-heater operation signal
2
Chiller-heater stop signal
3
Set point
User-Created
The diagrams and tables that follow detail some of the
work that must be performed by the customer to be
sure that the communication systems work properly.
Serial Interface
(COM2)
TABLE 10 - SCOPE OF DELIVERY OF UPPER COMMUNICATION SYSTEM
ITEM
Control panel with upper
communication function
Wiring work for Modbus RTU
communication
Communication program for central
monitoring unit
JOHNSON CONTROLS
ADDRESS
02001
02002
00203
CUSTOMER
JCI
X
X
X
SECTION 4 - TECHNICAL DATA
CONTENT
ON at Chiller-heater OPERATION, PULSE
SIGNAL
ON at Chiller-heater STOP, PULSE SIGNAL
0050~1000 unit, 1 unit=0.1°C
Connect User-Created
Cable
REMARKS
Communication protocol: Modbus RTU.
Attach a RS485 communication cable. See Table 11
on page 50 for more information.
See Table 7 on page 47 for the details of
communication protocol, path type, function code,
communication data address and other pertinent
information.
4
LD20597f
49
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Table of Contents
Troubleshooting
