GE GFK-0804B 用户手册
B
B-3
GFK–0804B
Appendix B Micro PLC Protocol
Communications Memory Types and Addresses
I/O Memory Addresses
Type
Code
Max
Address Range (hex)
Discrete Input
I
256
0000 – 00FF
Discrete Output
O
256
0100 – 01FF
Forced Discrete Input
FI
256
0200 – 02FF
Forced Discrete Output
FO
256
0300 – 03FF
Internal Coil
C
1024
0400 – 07FF
Registers
(includes the next two items)
(includes the next two items)
Analog Input
Analog Output
Analog Output
IR
OR
256
0000 – 01FE *
0200 – 03FE *
0200 – 03FE *
Internal Registers
R
512
0400 – 07FE *
*
Byte address with Least Significant Bit always 0.
Special Registers
Registers 501 to 512 are reserved. Registers 510 to 512 are used for communications setup.
Register
Function
Description
510
Protocol
0 = Micro PLC (default)
1 = RTU
1 = RTU
511
Station Address
1 (default) to 247
512
Baud rate
0 = 300
1 = 600
2 = 1200
3 = 2400
4 = 4800
5 = 9600
1 = 600
2 = 1200
3 = 2400
4 = 4800
5 = 9600
Communications Parameters
Baud Rate
9600 (default)
Data Bits
8
Stop Bit
1
Parity
None