Table of Contents
Advertisement
2. SYSTEM
ATION
MELSEC QnA
This section describes the system configuration needed to use the QC24
to
implement data
communications.
2.1
Data Communications System Configuration and Number of Link
Stations
Two system external device and QC24 (PC CPU) system configurations are available: 1 : 1-1 : 32
stations and 2: 1-2 : 32 stations.
The QC24 can connect to external devices through an RS-232C interface or an RS-422/485
interface.
2.1.1
1:l ratio of external device to PC CPU
1 : 1 configuration
RS-232C or RS-4221485
Interface
\
External
device
RS-232C or RS-422/485 interface
QnACPU
QC24
module
QC24 Functions That Can be Used
Dedicated protocol
I
Non procedure protocol
I
Bidirectional protocol
n
I
I
Fig. 2.1 System Configuration (I)
2 - 1
Advertisement
Table of Contents
