B.3.10 RS-232 Modbus Timeout
This setting determines how long, in milliseconds, the MODBUS/TCP to MODBUS/RTU gateway
will wait for an answer from the MODBUS slave device(s) attached to the RS-232 port. If no
answer is received within the timeout period, the MODBUS/TCP server will reply to the
MODBUS/TCP client with error code 0x0B (Target Device Failed to Respond).
B.3.11 RS-232 TCP Serial Client IP Address
This setting specifies the IP address of the outgoing TCP Serial Client connection that the device
should maintain. If the connection fails, the device will retry until the connection succeeds. No
entry specifies that no client connection will be made.
B.3.12 RS-232 TCP Serial Client Port
This setting specifies the TCP port of the outgoing TCP Serial Client connection (range 1 to
65535).
B.4 CS I/O tab
B.4.1 CS I/O Configuration
This setting controls which process will be associated with the CS I/O port. The following values
are defined:
TCP Serial Server
The device will listen for an incoming TCP connection from a remote client. The port number of
the listening connection is specified in the CS I/O Service Port setting. Data received on the
TCP connection will be forwarded to the CS I/O port, and data received on the CS I/O port will
be forwarded to this TCP connection.
PakBus
This port uses the PakBus protocol.
Modbus/TCP gateway
The device will listen for incoming MODBUS/TCP connections from a remote client. The port
number of the listening connection is specified in the CS I/O Service Port setting. The device
will convert incoming MODBUS/TCP frames to MODBUS/RTU and forward them to the CS I/O
port. The device will wait for a response from the MODBUS/RTU device and forward the
response back to the remote MODBUS/TCP client over the established TCP connection.
NL241 Wireless Network Link Interface
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