Chapter 18 How To Control From Cpu Module; Specifications Of I/O Signals With Cpu Modules - Mitsubishi Electric MELSEC iQ-R Series User Manual

18
HOW TO CONTROL FROM CPU MODULE
18.1

Specifications of I/O Signals with CPU Modules

This section describes how to control the Motion module from the CPU module (control CPU only).
I/O signals
The Motion module uses 32 points of the input and 32 points of the output for exchanging data with the CPU module.
The following table shows the I/O signals when 0H has been set to the start I/O No. of the Motion module.
The device X is the input signal from the Motion module to the CPU module, and the device Y is the output signal from the
CPU module to the Motion module.
Signal direction: Motion module  CPU module
Device No. Signal name
X0 READY
X1 Synchronization flag
X2 Use prohibited

X1F
The ON/OFF timig and conditions of the I/O signals are shown below.
Device Signal name
No.
X0 READY OFF: Not READY
ON: READY
X1 Synchronization OFF: Module access
flag disabled
ON: Module access enabled
Y0 PLC READY OFF: PLC READY OFF
ON: PLC READY ON
Buffer Memory
User setting area can be used for exchanging data between the CPU module and the Motion module.
Start No. End No.
11478000 11997999
11999997 11999997
Do not use the other areas than the above.
Description
• When the PLC READY signal [Y0] turns from OFF to ON, the parameter setting range is
checked. If no error is found, this signal turns ON.
• When the PLC READY signal [Y0] turns OFF, this signal turns OFF.
• When a moderate error or a major error occurs, this signal turns OFF.
• This signal is used for interlock in a program, etc.
PLC READY [Y0]
READY [X0]
• After the CPU module is turned ON or resetted, this signal turns ON if the access from the
CPU module to the Motion module is possible.
• When the module startup is set to "Asynchronous" in the module synchronization setting of
the CPU module, this signal can be used as interlock for the access from a program to the
Motion module.
• This signal notifies the Motion module that the CPU module is normal.
It is turned ON/OFF with the PLC program.
• When the data (parameter) is changed, the PLC READY [Y0] is turned OFF depending on
the parameter.
• The following processes are carried out when the PLC READY [Y0] turns from OFF to ON.
The parameter setting range is checked.
The READY signal [X0] turns ON.
• The following processes are carried out when the PLC READY [Y0] turns from ON to OFF.
The READY signal [X0] turns OFF.
The operating axis stops.
Name
User setting area
System (available for user)
Signal direction: CPU module  Motion module
Device No. Signal name
Y0 PLC READY
Y1 Use prohibited


Y1F
ON
OFF
ON
OFF
18 HOW TO CONTROL FROM CPU MODULE
18.1 Specifications of I/O Signals with CPU Modules
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