Mitsubishi MELSEC Q Series Handbook

3 ETHERNET INTERFACE MODULE REPLACEMENT
3 - 22
(1) A/AnS series
: Compatible, : Partial change required, ×: Incompatible
*1 Read/write of programmable controller CPU internal data
(1) On the Q series, some commands (batch read/writer of microcomputer) are not usable.
For details, refer to the MELSEC communication protocol reference manual.
(2) Devices of the same name that exist on the A/AnS series programmable controller CPU can be read/written within the
device ranges of AnACPU.
The following devices cannot be accessed from external devices:
• Devices newly added on by Q/QnACPU
• Latch relays (L) and step relays (S)
• In the case of Q/QnACPU, the internal relays (M), the latch relays (L) and step relays (S) of other devices can not be
specified as target devices to be accessed.
• File registers (R)
(3) The following devices are accessed on special relays (M9000 onwards) and special registers (D9000 onwards):
• SD1000 to SD1255 are accessed by specifying D9000 to D9255.
• SM1000 to SM1255 are accessed by specifying M9000 to M9255.
3.7 Reuse of Existing Programs
Item
Compatibility
Precautions for replacementProgram (Communication
target device)
Sequence program
(Ethernet Interface module)
Communications using fixed
buffer
(procedural, nonprocedural)
[Programmable controller side]
The sequence program is not
compatible as buffer memory
assignments differ.
Change to a sequence
program that uses the
dedicated instructions
(BUFSND/BUFRCV).
Communications using
random access buffer
[Programmable controller side]
The sequence program is not
compatible as buffer memory
assignments differ.
Check the buffer memory
assignments and change the
sequence program.
Read/write of programmable
controller CPU internal data
-
[Communication target device
side]
Some of the command and
device ranges are restricted.
*1

Mitsubishi MELSEC Q Series Specifications

General

Brand	Mitsubishi
Model	MELSEC Q Series
Category	Controller
Language	English