ProSoft Technology 5202-DFNT-MCM4 - Manual (Page 50)

MCM ♦ ProLinx Gateway Modbus Port Expander (4102/5102-MBS3-MBM)
Modbus Master/Slave Driver Manual
Page 50 of 80
ProSoft Technology, Inc.
October 16, 2009
7.1.9 Minimum Response Delay
0 TO 65535
This parameter is used only when the port is configured as a slave. It sets the
number of milliseconds to wait before responding to a command received on the
port from a remote Master. This delay is sometimes required to accommodate
slower Master devices.
7.1.10 Use CTS Line
Y ES or N O
This parameter specifies if the Clear To Send (CTS) modem control line is to be
used or not. If the parameter is set to N
O , the CTS line will not be monitored. If
the parameter is set to Y ES , the CTS line will be monitored and must be high
before the gateway will send data. Normally, this parameter is required when
half-duplex modems are used for communication (2-wire). This procedure is
commonly referred to as hardware handshaking.
7.1.11 Response Timeout
0 TO 65535 milliseconds
This parameter sets the command response timeout period in 1 millisecond
increments. This is the time that a port configured as a Master will wait for a
response from the addressed slave before re-transmitting the command (Retries)
or skipping to the next command in the Command List. The value to set depends
on the communication network used and the expected response time (plus a little
extra) of the slowest device on the network.
7.1.12 Retry Count
0 to 10
This parameter specifies the number of times a command will be retried if it fails.