Johnson Controls York YHAU-C - Communication Specification; Communication Data

Table 14: Ethernet interface specification
Item Specification
Blink Data sending/receivingActive
(Green)
No light No data sending/receiving
Blink
Data sending/receiving through
10 BASE-T / 100 BASE-TX
LED function
Link
(Green)
No light No connection or successor job failure
Communication specification
Table 15: Communication specifications
Communication protocol Modbus TCP
Communication path type 10 BASE-T / 100 BASE-TX
IP address (No. 1) 192.168.1.1, (No.2) 192.168.1.2, (No. 3) 192.168.1.3
Subnet mask 255.255.255.0
Read Command
(Digital Signal) 01/Read Coil
(Analog Signal) 03/Read Holding Register
Function code
Write Command
(Digital Signal) 05/Force Single Coil
Communication data
Table 16: Read command
Item Display Unit Address Content
1 Set Point 46.4 °F 00001 0050~1000 unit, 1 unit=0.1°F
2
Automatic stop temp.
(thermo-off temp)
41 °F 00003 0040~1000 unit, 1 unit=0.1°F
Set value
3
Temp. difference of
Automatic start/stop control
41 °F 00005 0001~1000 unit, 1 unit=0.1°F
4 Operation condition 0 or 1 - 00021 0:STOP, 1:COOLING OPERATION
5 Local/remote mode condition 0 or 1 - 01001 0:LOCAL, 1:REMOTE
6 Solution pump condition 0 or 1 - 01003 0:STOP, 1:OPERATION
7 Refrigerant pump condition 0 or 1 - 01005 0:STOP, 1:OPERATION
8 Load limit condition 0 or 1 - 01009
0:NORMALLY OPERATION
1:LOAD LIMIT OPERATION
9 Control manipulated variable 100 % 00023 -0100~1100 unit, 1 unit=0.1%
10 Failure signal 0 or 1 - 01011
0:NORMAL OPERATION
1:FAILURE OCCUR
Operation condition
11 Alarm signal 0 or 1 - 01013
0:NORMAL OPERATION
1:ALARM OCCUR
12 Chilled water inlet temp. 55 °F 00083 0001~4000 unit, 1 unit=0.1°F
13 Chilled water outlet temp. 46.4 °F 00085 0001~4000 unit, 1 unit=0.1°F
14
Refrigerant temp
at evaporator
42.8 °F 00087 0001~4000 unit, 1 unit=0.1°F
15 Cooling water inlet temp. 87 °F 00089 0001~4000 unit, 1 unit=0.1°F
16 Cooling water outlet temp. 98.6 °F 00091 0001~4000 unit, 1 unit=0.1°F
17 Absorber solution temp. 100.4 °F 00093 0001~4000 unit, 1 unit=0.1°F
18 Generator temp. 194 °F 00095 0001~4000 unit, 1 unit=0.1°F
19 Generator pressure 176 mmHg 00101 0001~4000 unit, 1 unit=0.1 mmHg
Measurement value
20 Purge tank pressure 15 mmHg 00103 0001~4000 unit, 1 unit=0.1 mmHg
91YHAU-C Single Effect Steam-Fired Absorption Chiller