Yaskawa MP900 Series Ladder Programming Manual - Manual (Page 20)

1.2 Features of Ladder Programming for MP2000-series Machine Controllers
1.2.4 Communications Control with External Devices
1-5
Introduction to Ladder Programming
1
1.2.4 Communications Control with External Devices
The MSG-SND and MSG-RCV ladder instructions support various protocols and can be used to control communica-
tions with many external devices, such as a touch panels or host PLCs. This allows external devices to access registers
in the Machine Controller.
Instead of using a ladder program, the Machine Controller can also communicate with external devices by using I/O message
communications or automatic reception.
Refer to Chapter 6 Ethernet Communications in the Machine Controller MP2310 Basic Module User’s Manual (Manual No.:
SIEP C880732 01) for details.
1.2.5 Complete Synchronization with Motion Control
Ladder programs that are started in the high-speed scan are processed in complete synchronization with motion control
processing. This allows you to call and process a motion program that performs complicated motion control synchro-
nously with a ladder program.
MP2000-series Machine Controller
• MSG-SND instruction
(Send Message)
• MSG-RCV instruction
(Receive Message)
Ladder Program
Touch Panel
PLC
Registers
External Device
INFO
Sequence Control
Ladder Program (High-speed Scan)
Motion control is processed in
complete synchronization with
the high-speed scan.
Motion Control
(Motion Module)
Completely
synchronized
control
Position
control
Speed
control
Torque
control
Motion parameters
Motion Program
Setting
motion
parameters
Start of a Motion
Program