12.2
Modbus mode
Network master to serial slaves
Modbus master
RS422/485
TCP/IP
PLC Modbus slaves
GUID-0F99AFF8-EEF0-4D81-80DD-72CF8104F053 V2 EN
Figure 19:
Network master to serial slaves mode
In the “Network master to serial slaves” mode, the device acts like network server
where masters (clients) can connect (the default port being 502) and transmit Modbus
requests. The device makes conversions between network and serial protocols. If the
slave does not reply during defined timeout or if the reply is corrupted, the device
sends “gateway exception message” back to the master if the exception generation is
enabled. Otherwise, the reply is returned. Multiple masters can connect
simultaneously to the Gateway, which handles the multiplexing between masters.
Section 12
1MRS758459 C
Modbus application settings
64
ARC600
User Manual