Carlo Gavazzi PQT-90 - Manual (Page 37)

Setup
Communication setup 73
PQTSoft Network
71 70
Setup
68
PQTSoft Network
Local single PQT connected to
the PC by RS232 serial port.
Maximum 255 PQT’s in an RS485 local network connected to
the PC by RS232 thanks to the RS485-RS232 SIU-PC convert-
er.
Max 25,000 PQT’s in max 100 remote RS485 networks
(each made of 250 instruments) connected to the PC by
means of a telephone network and RS485-RS232 SIU-PC
converter.
RS232
RS485 RS485
SIU-PC
RS232
... MAX255
RS232 RS232
MODEM MODEM
Telephone network
... MAX100
RS232 RS232 Telephone network RS485
MODEM MODEM SIU-PC
... MAX100
... MAX255
... MAX255
Max. 100 remote single PQT’s (PQTSoft can manage max.
100 phone numbers to be chosen among those listed in the
phone book) connected to the PC by means of a telephone
network thanks to an analogue modem (make sure that the
“nullmodem” connector is always connected between PQT
and modem).