User`s manual

2
2. Performance Specifications
The following describes the performance specifications of the serial
communication module.
Use the modem function with reference to the relevant performance
specifications in the user's manual (Basic).
For general specifications of the serial communication module, refer to the
user's manual of the CPU module.
Specifications (when the modern function is not used)
Item
QJ71C24N
QJ71C24
QJ71C24N-R2
QJ71C24-R2
QJ71C24N-R4
CH.1
RS-232-compliance
(D-sub 9P)
RS-232-compliance
(D-sub 9P)
RS-422/485-compliance
(2-piece plug-in
connector socket block)
Interface
CH.2
RS-422/485-compliance
(2-piece terminal block)
RS-232-compliance
(D-sub 9P)
RS-422/485-compliance
(2-piece plug-in
connector socket block)
Synchronization method Start-stop synchronization method
[QJ71C24N(-R2/R4)]
50 300 600 1200 2400 4800 9600
14400 19200 28800 38400 57600 115200 230400 (bps)
•
Transmission speed 230400 bps is available for only CH1. (Not
available for CH2)
•
Total transmission speed of two interfaces is available up to 230400
bps.
•
Total transmission speed of two interfaces is available up to 115200
bps when the communication data monitoring function is used.
[QJ71C24(-R2)]
50 300 600 1200 2400 4800 9600
14400 19200 28800 38400 57600 115200 - (bps)
Transmission speed
•
Total transmission speed of two interfaces is available up to 115200
bps.
Start bit 1
Data bit 7/8
Parity bit 1(vertical parity) or none
Data format
Stop bit 1/2
Parity check For all protocol, select odd/even by the parameter when there is an error.
Error detection
Sum check
code
Select by the parameter for MC protocol/Bidirectional protocol.
Select by the user entry frame for non-procedure protocol.
RS-232
Maximum 15 m
(49.2 ft.)
Maximum 15 m
(49.2 ft.)
-
Transmission
distance
(Overall
distance)
RS-422/485
Maximum 1200 m
(4592.4 ft.)
(overall distance)
-
Maximum 1200 m
(4592.4 ft.)
(overall distance)
Allowable number of writes
to flash ROM
Maximum 100,000 writes to the same area
Number of occupied I/O
points
32 points per slot (I/O assignment: Intelli: 32 points)