Prosoft-technology MVI56-DFCMR Manual de usuario descargar pdf (Pagina 31)

Installing and Configuring the Module MVI56-DFCMR ♦ ControlLogix Platform

DF1 Interface Module with Reduced Data Block

ProSoft Technology, Inc. Page 31 of 113

October 20, 2008

5047 Data Bits

This parameter sets the number of data bits for each

word used by the protocol. Enter a value in the range

of 5 to 8.

5048 Stop Bits

This parameter sets the number of stop bits to be

used with each data value sent. Enter a value of 1 or

5049

Minimum Response

Delay

This parameter sets the number of milliseconds to

wait before a response message is sent out of the

port. This parameter is required when interfacing to a

slow responding device. Enter a value in the range of

0 to 65535.

5050 RTS On Delay

This parameter sets the number of milliseconds to

delay after RTS is asserted before the data will be

transmitted. Enter a value in the range of 0 to 65535.

5051 RTS Off Delay

This parameter sets the number of milliseconds to

delay after the last byte of data is sent before the

RTS modem signal will be set low. Enter a value in

the range of 0 to 65535.

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).

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. Enter a value in the range of 0 to

65535.

5054 Command Count

This parameter specifies the number of commands

to be processed for the port. Enter a value of 0 to

100.

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. Enter a value in the range of 0 to 65535.

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. Enter a value of 0 to

4999.

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.

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