Modbus slave advanced settings field descriptions – Perle Systems Perle IOLAN DS1 User Manual
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Serial Port Profiles
Modbus Slave Advanced Settings Field Descriptions
Configure the following parameters:
TCP/UDP Port
The network port number that the Slave Gateway will listen on for both TCP
and UDP messages.
Default: 502
Next Request Delay A delay, in milliseconds, to allow serial slave(s) to re-enable receivers before
issuing next Modbus Master request.
Range: 0-1000
Default: 50 ms
Enable Serial
Modbus Broadcasts
When enabled, a UID of 0 (zero) indicates that the message will be broadcast to
all Modbus Slaves.
Default: Disabled
Request Queuing
When enabled, allows multiple, simultaneous messages to be queued and
processed in order of reception.
Default: Enabled
Embedded
When this option is selected, the address of the slave Modbus device is
embedded in the message header.
Default: Enabled
Remapped
Used for single device/port operation. Older Modbus devices may not include a
UID in their transmission header. When this option is selected, you can specify
the UID that will be inserted into the message header for the Modbus slave
device. This feature supersedes the Broadcast feature.
Default: Disabled
Remap UID
Specify the UID that will be inserted into the message header for the Slave
Modbus serial device.
Range: 1-247
Default: 1