
Modbus-TCP Register Implementation
15 (70)
4
Modbus-TCP Register Implementation
4.1
Holding Registers (4x)
Range
Contents
Notes
0000h...02FFh
Read Process Data (1536
bytes)
-
0300h...07FFh
Reserved
-
0800h...0AFFh
Write Process Data (1536
bytes)
-
0B00h...0FFFh
Reserved
-
1000h...1002h
Reserved
-
1003h
Process Active Timeout
See
Network Configuration Object (04h), p. 29
1004h
Enter/Exit Idle Mode
0: Not Idle, >0: Idle
1005h...100Fh
Reserved
-
1010h...101Fh
ADI Number 1
See
Application Data (ADIs), p. 13
1020h...102Fh
ADI Number 2
...
...
FFF0h...FFFFh
ADI Number 3839
4.2
Input Registers (3x)
Range
Contents
Notes
0000h...02FFh
Write Process Data
-
0300h...07FFh
Reserved
-
0800h
Diagnostic Event Count
Number of pending diagnostic events.
There may be "gaps" between active diagnostic events.
Inactive diagnostic events return 0000h when read.
0801h
Diagnostic Event #1
These registers corresponds to instances in the Diagnos-
tic Object (02h), see
Diagnostic Object (02h), p. 27
High byte = Severity
Low byte = Event Code
0802h
Diagnostic Event #2
0803h
Diagnostic Event #3
0804h
Diagnostic Event #4
0805h
Diagnostic Event #5
0806h
Diagnostic Event #6
4.3
Coils (0x)
Range
Contents
Notes
0000h...2FFFh
Read Process Data
-
3000h...7FFFh
Reserved
-
4.4
Discrete Inputs (1x)
Range
Contents
Notes
0000h...2FFFh
Write Process Data
-
3000h...07FFh
Reserved
-
Anybus
®
CompactCom
™
40 Modbus-TCP
®
Transparent Ethernet Network Guide
SCM-1202-022 1.1