JOHNSON CONTROLS
84
FORM 155.30-ICOM2.EN.UL
ISSUE DATE: 12/21/2018
SECTION 4 - TECHNICAL DATA
TABLE 19 -
WRITE COMMAND
ITEM
ADDRESS
CONTENT
1
Chiller operation signal
02001
ON at CHILLER OPERATION, PULSE
SIGNAL
2
Chiller stop signal
02002
ON at CHILLER STOP, PULSE SIGNAL
3
Hot water control valve upper limit
00201
0000~1000 unit, 1 unit=0.1%
4
Set point
00203
0050~1000 unit, 1 unit=0.1°F
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.
TABLE 20 -
SCOPE OF DELIVERY OF UPPER
COMMUNICATION SYSTEM
ITEM
CUSTOMER
JCI
REMARKS
Control panel with upper
communication function
X
Communication protocol: Modbus RTU
Wiring work for Modbus RTU
communication
X
Apply RS485 communication cable.
for more information.)
Communication program for central
monitoring unit
X
See
for the details of
communication protocol, path type, function code,
communication data address, and so on.
LD20597
Serial Interface (COM2)
Connect User-Created Cable
FIGURE 37 -
CONNECTION DETAIL FOR D-SUB 9 PIN
