Siemens SENTRON PAC RS485 Manual page 76

Application examples
12.1 Examples of MODBUS communication
Reading a parameter
Table 12-3 Requirement
Address FC
01 04
Explanation:
Table 12-4
Address
01
Execute command: Switch to low tariff
Table 12-5 Requirement
Address FC
01 06
Explanation:
Table 12-6 Response - confirmation of the slave
Address FC
01 06
76
From register
C3 51
From offset 50001:
connection type
Response - confirmation of the slave
FC Number of read bytes Bytes to be read
04 32
Register
EA 66
From offset 60006:
Switch tariff
Register
EA 66
Number of registers to be read
00 10
Read 16 registers
00 00 00 00
00 00 00 00
00 00 01 90
00 00 01 90
00 00 00 00
00 00 00 05
00 00 00 05
00 00 00 00
Content of the register
00 01
Content of the register
00 01
CRC
9C 53
CRC
00 6D
CRC
9C 0D
CRC
9C 0D
PAC RS485
Manual, 02/2008, A5E02091800B-01