Modbus Register Maps - ABB ARR600 User Manual

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Table 18: Modbus register map for IO-1 (8DI+2DO)
Function code (Hex) Function
1 (0x01) Read Coils
2 (0x02) Read Discrete
Inputs
3 (0x03) Read Multiple
Holding Registers
5 (0x05) Write Single Coil
6 (0x06) Write Single
Holding Register
15 (0x0F) Write Multiple Coils
16 (0x10) Write Multiple
Holding Registers
Table 19: Modbus register map for IO-2 (6DI+4DO+2AI)
Function code (Hex) Function
1 (0x01) Read Coils
2 (0x02) Read Discrete
Inputs
3 (0x03) Read Multiple
Holding Registers
Table continues on next page
ARR600
User Manual
Name Description
Server Defines the TCP or UDP port that masters can form connections
TCP/UDP - to. Default Modbus TCP/IP communication port is 502. If
port multiple Modbus gateways are running on same device (for both
serial ports) the TCP/UDP communication ports must not be
same. For example, ports 502 and 504 can be used. The
network and the device's firewalls must enable TCP or UDP
communication for that port.
Max. number Defines how many network masters can be connected to the
of clients device simultaneously. The recommended value is at least 2
when using TCP communication. Otherwise if the device does
not recognize a partially closed connection, forming new
connections is not accepted by the device the time set in
parameter "Connection idle timeout" is elapsed.
Connection If there has not been communication on this route during given
idle timeout amount of seconds, the device automatically closes the TCP
connection to slave and therefore frees the slave's
communication resources. This is especially useful when
multiple masters access the same slave. The recommended
setting is about two times the polling interval of the master.
Enable Defines if connection testing is performed by sending TCP
keepalive keepalive packets at certain intervals. enabled for TCP network
communication. If set to "Yes", testing the TCP connection with
slave is enabled.

Modbus register maps

Address range
0...1
0...7
0...7
0...1
0...7
0...1
0...7
Address range
0...3
0...5
0...5
Modbus application settings
Number of registers Modicon notation
2 00001...00002
8 10001...10008
8 40001...40008
2 00001...00002
8 40001...40008
2 00001...00002
8 40001...40008
Number of registers Modicon notation
4 00001...00004
6 10001...10006
6 40001...40006
Section 10
Value range
1...32500
0...20
0...32500
No, Yes
Properties
Read digital outputs
Read digital inputs
Read input counters
Write digital output
Clear input counter
Write digital outputs
Clear input counters
Properties
Read digital outputs
Read digital inputs
Read input counters
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