User`s manual

76
3.2 System Configuration
This section describes system configurations when the modem function is used to call a pager receiver or to perform
data communication with an external device via public lines.
3.2.1 System configuration when performing data communication
with an external device
The following describes the system configuration examples used when performing data communication between the
external device and programmable controller using the Q series C24's MC protocol/non procedure
protocol/bidirectional protocol.
(1) Connection example with an external device
*1*2
(2) Connection example with a Q series C24
*1*2
QJ71C24-R2
CH1.
CH2.
CH1.
CH2.
Q25HCPU
MODE
RUN
ERR.
USER
BAT.
BOOT
RS-232
USB
RS-232
cable
Modem
Modem
RS-232
cable
External device
Public line
QJ71C24-R2
CH1.
CH2.
CH1.
CH2.
Q25HCPU
MODE
RUN
ERR.
USER
BAT.
BOOT
RS-232
USB
QJ71C24-R2
CH1. CH2.
CH1.
CH2.
Q25HCPU
MODE
RUN
ERR.
USER
BAT.
BOOT
RS-232
USB
Modem
RS-232
cable
RS-232
cable
Public line
Modem