Perle Systems IOLAN SCS - Manual (Page 163)

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Serial Port Profiles
General Tab Field Descriptions
Configure the following parameters:
Mode Specify how the Modbus Gateway is defined on the serial port.
Data Options:
z Modbus Master—Typically, the Modbus Master is connected to the
Serial Port and is communicating to Modbus Slaves on the network.
z Modbus Slave—Typically, the Modbus Master is accessing the IOLAN
through the network to communicated to Modbus Slaves connected to the
IOLAN’s Serial Ports.
Default: Modbus Master Gateway
Destination Slave
IP Mappings
Button Click this button to launch the Destination Slave IP Settings window, where
you can configure the TCP/Ethernet Modbus Slaves that the Modbus Master on
the Serial Port will communicate with.
Advanced Slave
Settings Button Click this button to configure global Modbus Slave settings.
UID Range You can specify a range of UIDs (1-247), in addition to individual UIDs.
Field Format: Comma delimited; for example, 2-35, 50, 100-103
Modbus/RTU Select this option when the Modbus/RTU protocol is being used for
communication between the Modbus Master and Slave.
Default: Enabled
Modbus/ASCII Select this option when Modbus/ASCII protocol is being used for
communication between the Modbus Master and Slave.
Default: Disabled
Append CR/LF When Modbus/ASCII is selected, adds a CR/LF to the end of the transmission;
most Modbus devices require this option.
Default: Enabled