Specifications

MODBUS COMMUNICATION MANUAL
2-17
Table 2-4. BMS Standard Holding Register Address Mapping-Cont.
Modbus Data
Address (Hex) Menu Item Units and Range Default/Comments
0x004C Offset Off Time
Day 7 – Minutes
0 to 59 Minutes Default = Zero
0x004D Offset Off Time
Day 1 – Hours
0 to 23 Hours Default = Zero
0x004E Offset Off Time
Day 2 – Hours
0 to 23 Hours Default = Zero
0x004F Offset Off Time
Day 3 – Hours
0 to 23 Hours Default = Zero
0x0050 Offset Off Time
Day 4 – Hours
0 to 23 Hours Default = Zero
0x0051 Offset Off Time
Day 5 – Hours
0 to 23 Hours Default = Zero
0x0052 Offset Off Time
Day 6 – Hours
0 to 23 Hours Default = Zero
0x0053 Offset Off Time
Day 7 – Hours
0 to 23 Hours Default = Zero
0x0054 (Reserved)
0x0055 Indoor Air Input 0 or 1
0 = 4 - 20 mA
1 = Thermistor
Default = 1
(Thermistor)
0x0056 Remote Signal 0 or 1
0 = 4 - 20 mA
1 = Network
Default = 0
(4 - 20 mA)
0x0057 RS232 Mode 0 or 1
0 = Normal
1 = Modbus
Default = 0
(Normal)
0x0058 RS232 Baud Rate 2400, 4800, 9600, 14.4k,
19.2k
Default = 9600
0x0059 Number Of Network
Boilers
0 to 32 Default = 0
0x005A Min Slave Address 0 to 127 Default = 0
**0x005B Max Slave Address 0 to 127, Default = 0
**0x005C Net Boiler 1
Address
Address for Network Boiler 1
(same as Boiler #9)
**0x005D Net Boiler 2
Address
Address for Network Boiler 2
(same as Boiler #10)