RTU Modbus interface : MPNC006 Mect srl
16
ME7084_05 07/21
3.5.3
Parity and stop bit configuration
If at the start the address dips (
) are all zero, the procedure for
reading/setting the configuration of the stop, parity and data bits is accessed.
The selection of the configuration type is made by reading dips
1
and
2
.
In this condition the LED_On flashes.
Switch settings
Configuration
S-1
S-2
0
1
Parity bit
1
0
Stop bit
Depending on the type of configuration chosen, dips 1 and 2 select the configuration
to be programmed.
Parity bit:
S1=0; S2=1
Procedure:
- Set all dip switches to 0 except dip 2;
- Power up the instrument;
- Wait a few seconds until the LED_On flashes;
- Carry out the desired
programming
(see below);
- Set dip 2 to 0 and wait for the LEDs: Run, Ain1 and Ain 2 to light up;
- Switch off the instrument;
- Set the Baud rate and the desired address;
- Power up the instrument.
As long as dips 3 to 8 are at 0, the LEDs LED_Run, LED_Ain1 and LED_Ain 2
indicate the current parity configuration according to the following table:
Configuration
LED
LED_Run LED_Ain1 LED_Ain 2
No parity
ON
OFF
OFF
Even Parity
OFF
ON
OFF
Odd parity
OFF
OFF
ON
