Specifications

55
Programming Units
The A7PU is a powerful, small programming device which can
be used to compile, monitor and edit programs. It is a handy
programming unit which can be used as either a hand held
unit or as an interface unit for the programming of all the
MELSEC A PLCs. It is capable of displaying two lines of
program at a time and is connected to the PLC via an RS422
interface. When used in conjunction with an audio cassette, it
can store and maintain programs and data.
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A6WU EPROM writer
The A6WU EPROM writer is designed to be used with type
2764, 27128, and 27256 EPROMs. It has an LCD display, and
can be operated easily using its dialogue mode. Its functions
enable reading, writing, verify and erase checking of the
EPROMs. It is connected to the PLC via an RS422 interface and
can be hand held or clipped on to the PLC CPU’s programming
port.
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A7PU handy programming units
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A8PUE Peripheral Device
The A8PUE is a peripheral device that is used with the
MELSEC-A series of general-purpose programmable
controllers. It can read from and write to sequence programs
in a MELSEC-A series PC CPU.
The A8PUE is also used for monitoring and testing devices.
Follow the procedures in this manual when using the A7PUS
to perform program I/O, as well as inspection and
maintenance.
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A8PUE specifications
Item Specifications
Connected module ACPU
Power, current consumption Power supplied from connected ACPU (5 VDC, 0.4 A)
Connection method
Add-on (Attached directly to the ACPU)
Hand-held (Connected via RS-422 cable)
LCD display Display of 4 lines× 20 characters (with cursor)
Operating method Consists of 54 operation keys (covered with polyurethane film)
Key operation check Buzzer
Display lifespan
100000 hours of more (when using the unit at 15 to 35°C ambient temperature and 65% RH
or less ambient humidity)
Backlight lifespan
50000 hours or more (when using the unit at 25°C operating ambient temperature)
If ON, goes OFF if a key has not been input for 10 minutes.
Keypad lifespan 1000000 times
Outside dimensions 188 (7.40)×95 (3.74)×44.5 (1.75)
H×W×D mm (inch) When installed onto an ACPU, the depth is 37.5 (1.48).
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