Modbus Ascii Communications Interface Option - Lazer Safe PCSS-A Series Technical Manual

LS-CS-M-046
8.2

ModBus ASCII Communications Interface Option

ISaGRAF driver
Driver name
Driver description
Table 8-12: Analogue communication parameter outputs (ComParam)
Note:
The protocol option must be set to 1 when defining the ISaGRAF user application
for this communications interface option.
Note:
The communication parameters defined during configuration of the PCSS in the
ISaGRAF application are also shown on the alphanumeric display of the PCSS
after start-up as described in
Table 8-13: Analogue communications error count inputs (ComErr)
Original Language Version: 1.25
ser1__a11
Characteristics as shown below
Channel # Description
0 Protocol option (Set to 1 for ModBus ASCII)
1 Baud rate option (0 = 9600; 1 = 19200; 2 = 38400; 3 = 57600; 4 =
76800; 5 = 115200bps)
2 Number of data bits (5, 6, 7 or 8)
3 Parity option (0 = None; 1 = Odd; 2 = Even)
4 Number of stop bits (1 or 2)
5 Hardware flow control (0 = Disabled; 1 = Enabled)
6 Non-zero: Reset all counts in ComErr board
Channel # Description
0 Low level overrun error count
1 Low level framing error count
2 Low level parity error count
3 ASCII conversion error count
4 Data length error count
5 Checksum or CRC error count
6 Linefeed (LF) error count
7 Carriage return (CR) error count
8 Receive software buffer full error count
9 Receive synchronisation error count
Section 3.2.
PCSS-A Series Technical Manual
Page 57
Released: 12/09/2024