ComAp InteliGen NT

IGS-NT Communication Guide
97
7.4.3 Binary input - reading
Request: 01 03 00 02 00 01 25 CA
01 = Controller address
03
= Modbus function code (Read Multiple Registers
(page 133))
00 02
= Register address: Register number (40003) – 40001
= 02 DEC => 02 HEX
00 01 = Number of registers (40003) = 01 DEC => 01 HEX
CA 25
= Check field calculation (page 143) (write LSB MSB
!)
Response: 01 03 02 00 0A 38 43
01 = Controller address
03
= Modbus function code (Read Multiple Registers
(page 133))
02 = Length of read data in Bytes (in HEX)
00 0A
= Object data value (Binary input =
00000000000001010 i.e. BI2 and BI4 are set)*
43 38 = Check field calculation (page 143)
7.4.4 Password decode - reading
Request: 01 03 00 A0 00 02 C4 29
01 = Controller address
03 = Modbus function code (Read Multiple Registers (page 133))
00 A0 = Register address: Register number (40161) – 40001 = 160 DEC => A0 HEX
00 02 = Number of registers (40161 and 40162) = 02 DEC => 02 HEX
29 C4 = Check field calculation (page 143) (write LSB MSB !)
Response: 01 03 04 68 73 90 00 7B 88
01 = Controller address
03 = Modbus function code (Read Multiple Registers (page 133))
04 = Length of read data in Bytes (in HEX)
68 73 90 00 = 68739000 HEX => 1752403968 DEC = > password decode is 1752403968
88 7B = Check field calculation (page 143)