Yaskawa MEMOCON GL120 - Manual (Page 81)

4.3 CPU Modules
— 4-25 —
LED Color Indication when ON
READY Green CPU Module is normal.
RUN Green CPU Module is running.
MB+/ERR Green MEMOBUS PLUS port is transmitting/receiving
data normally.
Red Transmitting/receiving error has occurred in
MEMOBUS PLUS port.
BAT ALM Red Voltage in the built-in battery in CPU Module is
running down.
ACTIVE Green Access to CPU Module from other Module is
possible.
TX/ERR Green MEMOBUS port is transmitting data normally. /
Red Transmitting/receiving error has occurred in
MEMOBUS port.
RX Green MEMOBUS port is receiving data normally.
MEM PRT Green Key switch has selected memory protect ON.
Figure 4.8 Appearance of CPU20
Note Replace the battery in the CPU Module within two weeks after the BAT ALM indicator lights
(replacement battery: BR-2/3A-1).
Programs or data stored in the CPU Module or Motion Modules will be lost if replacement is
delayed.
4
RUN
READY
120 CPU 341 00
MB+/ERR
BAT ALM
ACTIVE
TX/ERR
RX
MEM PRT
LED area