DLG LMP-100, Руководство пользователя

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LMP-100
PROFIBUS/MODBUS GATEWAY
LMP-100 User Manual MAN-EN-DE-LMP100-01.00_14 Page 13 of 40
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Modbus network configuration
The LMP-100 provides the following configuration parameters for the Modbus network:
Parameter Description
Modbus baud rate
Modbus network baud rate. All slaves must use the baud
rate adopted by the LMP-100. The possible values are:
•
1200 bps
•
2400 bps
•
4800 bps
•
9600 bps
•
19200 bps
•
38400 bps
•
57600 bps
•
115200 bps
Modbus parity
Used as a mechanism to detect data transmission errors. All
slaves must use the parity adopted by the LMP-100. For
firmware versions up to 02.00.00, possible values are:
•
Even
•
Odd
•
None
Starting from firmware version 02.01.00, possible values are:
•
Even
•
Odd
•
None with 1 stop bit
•
None with 2 stop bits
The possibility of choosing the number of stop bits is aimed
at increasing interoperability with the widest possible range
of Modbus slaves. The Modbus specification states that 2
stop bits per character shall be used when parity is not used.
However, there are countless slaves on the market that
operate with only 1 stop bit.
Modbus scan time (ms)
Period, in milliseconds, of the scanning cycle used to poll
data from Modbus slaves. Allowed values lie in the range
from 0 to 60000 ms.
The scanning cycle period is defined as the minimum time