Specifications Of I/O Signals With Cpu Modules; List Of Input/Output Signals With Cpu Modules - Mitsubishi Electric FATEC MELSEC iQ-R Training Manual

3.4

Specifications of I/O Signals with CPU Modules

3.4.1

List of input/output signals with CPU modules

The RD77MS uses 32 input points and 32 output points for exchanging data with the CPU
module.
The following table shows the input/output signals used when RD77MS is mounted in the
slot No.0 in the base unit.
The devices X input signals from RD77MS to the CPU module, and the devices Y output
signals from the CPU module to RD77MS.
Signal direction: RD77MS → CPU module
Device No.
X0 READY
Synchronization
X1
flag
X2
X3
X4
X5
X6
X7
X8
X9
XA
XB
XC
XD
XE
XF
Signal name
ON: READY
OFF: Not READY/
Watch dog timer
error
OFF: Module access
disabled
ON: Module access
enabled
Use prohibited
Signal direction: CPU module → RD77MS
Device No.
PLC
Y0
READY
Y1 All axis servo ON
Y2
Y3
Y4
Y5
Y6
Y7
Y8
Y9
YA
YB
YC
YD
YE
YF
3-15
Signal name
OFF: PLC READY
OFF
ON: PLC READY ON
OFF: Servo OFF
ON: Servo ON
Use prohibited