Filter
Top Products
85
6. Configuring the Gateway
- “Sub-Network Status…”: In “on-line” mode (see
chapter 6.12.2 “ABC” Element, page 82), this command
displays a window summarizing the values of the gateway’s
error counters. These counters are also used by the
gateway to update the value of its status word (see
chapter 5.2.2 Gateway Status Word, page 40). The
“Update” button allows you to refresh the values of these
counters.
When you run this command in “off-line” mode, all of the
values displayed are replaced by the word “Unknown” to
show that they cannot be read on the gateway. The
“Update” button then becomes inaccessible.
When the “Sub-Network” element is selected, you have access to all of the options allowing you to configure the
gateway’s communication protocol format on the Modbus network. The various settings you can make are
described below. All of the Modbus slaves present must support this configuration and be configured
appropriately.
- Bitrate (bits/s): The gateway
supports a limited number of
communication speeds.
Choose the speed that suits
your Modbus network.
- Data bits: 8 bits (required).
- Message delimiter (10ms):
Period of silence added to
the normal period of silence
between the end of one
message and the start of the
next message. The normal
period of silence
corresponds to the time
taken to transmit
3.5 characters.
- Parity: Choose the parity
according to the format
chosen for communications
on your Modbus network.
- Physical standard: RS485
(required).
- Start bits: 1 bit (required).
- Stop bits: 1 or 2 bits.