Specifications

[Issue No.] GOT-A-0018-G [Page] 7/27
[Title] Precautions when Replacing GOTA800, A77GOT, A64GOT Series with GOT1000 Series
[Date of Issue] Ver.G: September 2011 (First Edition: September 2005)
[Relevant Models] GOT800, A77GOT, and A64GOT Series
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TECHNICAL BULLETIN
3.3 Communication modules and options without replaceable models
The communication modules and options for the GOT800 series and A77GOT series shown in the following list
have no alternative GOT1000 series models. If you have difficulty to replace the modules and options with the
GOT1000 series, keep enough spares.
Table 3-3 Communication modules and options without replaceable models and alternative plans
Category Item Model Alternative plan
A7GT-J71AP23
Data link unit for MELSECNET
(II) network system
A7GT-J71AR23
Data link unit for MELSECNET/B
network system
A7GT-J71AT23B
Replacing with the MELSECNET/H network system
(GOT1000 series communication unit model:
GT15-J71BR13 or GT15-J71LP23-25) is
recommended. (Section 4.4)
Communication
module
CC-Link communication module
(remote device station)
A8GT-J61BT15
Replacing with the CC-Link (intelligent device station)
communication unit (GOT1000 series communication
unit model: GT15-J61BT13) is recommended. (*16)
Option Numeric keypad panel
A8GT-TK
A7GT-TK
No alternative models (*17)
*16 - The number of used stations differs. (Remote device station: using two stations out of four stations, intelligent device
station: using one station out of four stations) Changing parameter in the CC-Link station setting (remote device station
-> intelligent device station) and others on the programmable controller are required.
- Maximum number of connected units is reduced from 32 to 26. When connecting more than 26 units, consider adding
a master station to support the system.
- Remote dedicated commands (initial setting command, continuous read command, random read command,
continuous write command, random write command, monitor register command, monitor request command, always
write register command, and always write register command) are not supported. Please consult Mitsubishi
representative for questions regarding to the remote dedicated command.
*17 Contact Mitsubishi Electric System & Service Co., Ltd about a cable (GT15-C03HTB) to use the A8GT-TK with the
GOT1000 series.
3.4 Replacing the GOT800, A77GOT, or A64GOT series connected to the MELSECNET() or
MELSECNET/B network system with the GOT1000 series
When the GOT800, A77GOT, or A64GOT series is used in the MELSECNET() or MELSECNET/B network
system, consider the replacement with any of the following method.
- Change the MELSECNET() or MELSECNET/B network system in the entire system to the MELSECNET/H
network system, and replace the GOT800, A77GOT, or A64GOT series with the GOT1000 series.
- Without the change of the MELSECNET() or MELSECNET/B network system in the entire system, change
the connection type between the programmable controller and the GOT, and replace the GOT800, A77GOT,
or A64GOT series with the GOT1000 series.
3.4.1 Replacing the network in the entire system with the MELSECNET/H network system
Use the following MELSECNET/H communication unit for the GOT1000 series.
Model Specifications
GT15-J71LP23-25 Optical loop unit
GT15-J71BR13 Coaxial bus unit
For details of changing to MELSECNET/H system, refer to Transition from MELSEC-A/QnA (Large Type)
Series to Q Series Handbook (Network Modules: L(NA)-08048ENG).
3.4.2 Changing the connection type between the programmable controller and the GOT without change
of the network in the entire system
(1) When the existing programmable controller has an empty slot
Add a communication module (for other than the MELSECNET(), MELSECNET/B, and MELSECNET/10
network systems) to the programmable controller, and change the connection type between the
programmable controller and the GOT.