Coolmay L02 Series PLC Programming Manual
the RS instruction, ), reset automatically.
M8123: RS command receiving end flag, need to be reset manually.
M8124: RS command data is being received.
M8161: 8-bit/16-bit mode distinguishing flag of RS instruction.
M8128: RD3A/WR3A receives the correct flag and needs to be reset
manually.
M8129: RD3A/WR3A communication timeout flag (when communication
timeout, the flag bit is ON).
M8029: Communication complete flag (communication complete flag when
using ADPRW instruction, manual reset is required).
D8120: Save the communication parameters of Modbus RTU/ASCII
protocol. For details, see the setting introduction in the table.
D8121: Save the station number of the master or slave. (This value must
be set to the maximum K255 when doing the host)
D8129: RD3A and WR3A timeout time(The unit is milliseconds. It is
recommended to set: when the communication rate is set to be greater than
or equal to 9600, D8129 is set to 10~20; when the communication rate is set
to be less than 9600, D8129 is set to 20~50).
D8126: Number of interval cycles. Default=10 (times).
D8397: When using the serial port 2 for ADPRW instruction, D8397 must
be set to 0.
Support RS, WR3A, RD3A, ADPRW instructions. Can be set in the
parameter zone, corresponding to serial port 2. The parameter zone settings
are only valid for this channel. It is invalid for serial port 3.
8.3.1. Mitsubishi programming port
When used as Mitsubishi programming port protocol: set M8196=0.