IMO Precision Controls K7 Series User Manual page 14

Chapter 2 System Configuration
(3) RS-232C Communication over a long distance via modem by Cnet I/F modules
G7L-CUEB
G7L-CUEB
Modem
Modem
G7L-CUEB
Modem
Modem
2) 1:n Communications system
This method can connect between one computer and mutilpe main units for up to 32 stations
Can be connected Max. 32 stations
RS-232C RS-422 Converter
G7L-CUEC
G7L-CUEC
2-3