ProSoft Technology MVI46-DFCM User Manual
Page 28
MVI46-DFCM ♦ SLC Platform
Installing and Configuring the Module
DF1 Communication Module
Page 28 of 103
ProSoft Technology, Inc.
October 20, 2008
Database in SLC
Database in MVI46-DFCM
File
M0 Offset
File
Register Content
Description
N10:43
44
N32:52
5052
Use CTS
Line
This parameter specifies if the
CTS modem control line is to be
used. If the parameter is set to 0,
the CTS line will not be
monitored. If the parameter is set
to 1, the CTS line will be
monitored and must be high
before the module will send data.
Normally, this parameter is
required when half-duplex
modems are used for
communication (2-wire).
N10:44
45
N32:53
5053
ENQ Delay
This parameter specifies the
number of milliseconds to wait
after a DLE-ACK is received from
a slave using half-duplex mode
before the DLE-ENQ request is
made for data. Valid value in the
range of 0 to 65535.
N10:45
46
N32:54
5054
Command
Count
This parameter specifies the
number of commands to be
processed for the port. Valid
value of 0 to 100.
N10:46
47
N32:55
5055
Minimum
Command
Delay
This parameter specifies the
number of milliseconds to wait
between the initial issuance of a
command. This parameter can be
used to delay all commands sent
to slaves to avoid "flooding"
commands on the network. This
parameter does not affect retries
of a command as they will be
issued when failure is recognized.
Valid value in the range of 0 to
65535.
N10:47
48
N32:56
5056
Command
Error Pointer
This parameter sets the address
in the internal DF1 database
where the command error data
will be placed. If the value is set
to -1, the data will not be
transferred to the database. Valid
value of 0 to 4999.
N10:48
49
N32:57
5057
Response
Timeout
This parameter represents the
message response timeout period
in 1-ms increments. This is the
time that a port configured as a
master will wait before re-
transmitting a command if no
response is received from the
addressed slave. The value is set
depending upon the
communication network used and
the expected response time of the
slowest device on the network.