32 SM-Applications Modules & Motion Processors User Guide
Issue Number: 4
Defines the baud-rate (or bits-per-second) for the on-board EIA-RS485 port. The
following are supported:
Note that this parameter is not relevant when the EIA-RS485 port mode is set to 25
(CTSync Master) or 26 (CTSync Slave)
Defines a fixed delay between receiving a message on the EIA-RS485 port and the
response being transmitted. This can be useful in 2-wire configurations where it takes a
finite time for the master (host) to switch from transmit mode to receive mode. There is
always at least a 1ms delay and this parameter can be used to extend it.
19, 49, 79
2-wire Modbus RTU master
The EIA-RS485 port is set for:
Mode 19: 1 start bit, 8 data bits, NO parity, 2 stop bits.
Mode 49: 1 start bit, 8 data bits, EVEN parity, 1 stop bit.
Mode 79: 1 start bit, 8 data bits, ODD parity, 1 stop bit.
20, 50, 80
2-wire Modbus ASCII master
The EIA-RS485 is set for:
Mode 20: 1 start bit, 7 data bits, NO parity, 2 stop bits
Mode 50: 1 start bit, 7 data bits, EVEN parity, 1 stop bit
Mode 80: 1 start bit, 7 data bits, ODD parity, 1 stop bit
25
SM-Applications Modules & Motion Processors CT-Sync Master
The baud rate is fixed at 896875bps
26
SM-Applications Modules & Motion Processors CT-Sync Slave
The baud rate is fixed at 896875bps
Apps Apps Lite Apps Plus Lite V2 ST Plus ST Indexer
Pr 81.07 EIA-RS485 Baud Rate
Access
RW
Range 0-9 (300-
115200bps)
Default 4 (4800) Update Rate Initialization
Display Value Desc Display Value Desc
300 0 300bps 9600 5 9600bps
600 1 600bps 19200 6 19200bps
1200 2 1200bps 38400 7 38400bps
2400 3 2400bps 57600 8 57600bps
4800 4 4800bps 115200 9 115200bps
Apps Apps Lite Apps Plus Lite V2 ST Plus ST Indexer
Pr 81.08 EIA-RS485 Turn-around Delay
Access RW Range 0 to 255ms
Default 2ms Update Rate Initialization
Apps Apps Lite Apps Plus Lite V2 ST Plus ST Indexer
Table 5-1 Serial modes - Pr 81.06
Mode Description
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