Mitsubishi MELSEC Q Series Handbook

2 SERIAL COMMUNICATION MODULE REPLACEMENT
2 - 8
:Compatible, :Partial change required, ×:Incompatible
*1 On the Q series, this is called "MELSEC communication protocol" (abbrev. "MC protocol").
Item
Specifications
Compat-
ibility
Precautions for replacement
AJ71QC24N
AJ71QC24N-R2
AJ71QC24N-R4
QJ71C24N
QJ71C24N-R2
QJ71C24N-R4
line
configuration
(data
communication)
Communication
using dedicated
protocol
1:1, 1:n, m:n
(n:max.32, m+n:max.32)
For details on linked operation
between interfaces, refer to
the manual.
Non-procedural
protocol
communication
1:1, 1:n (n:max.32)
1:1, 1:n, n:1 (n:max.32)
Bidirectional
protocol
communication
1:1
Transmission
distance
RS-232 Max.15m
RS-422/485 Max.1200m (overall distance)
No. of E
2
PROM writes
No. of flash ROM writes
Max. 100,000 times on same
area in E
2
PROM
Max. 100,000 times on same
area in flash ROM
No. of occupied I/O points
32 points/slot
(I/O assignment: special 32
points)
32 points/slot
(I/O assignment: intelli. 32 points)

Mitsubishi MELSEC Q Series Specifications

General

Brand	Mitsubishi
Model	MELSEC Q Series
Category	Controller
Language	English