Chauvin Arnoux MPC 350 Notice De Fonctionnement page 73

Character format: 8 bits, no parity, 2 stop bits
Transmission speed: 2400 baud
Transfer of a string of 40 bytes, or 10 bytes (9+CR) per parameter.
There are 2 transmission request modes:
1 Request by front: the command line must go from 5V to 0V.
2 Request by word: for each parameter, there is a code that can be used to
select what is wanted.
Code required:
An additional code is used to transfer the whole string.
Code required:
MPC 350 Multiparameter meter
pH
T°C
mV
Conductivity
G
S
N
E
C
English
5V
0V
73