Outline; System Design Method; Listing Up Of General-Purpose Equipment - Mitsubishi Electric G-50A Technical Manual

11.1 Outline

PLC will be used to control general-purpose equipment, along with a DI board (DC input unit) and a DO
board (transistor output unit).
One icon will be shown on the TG-2000A monitor screen to represent one system equipment, and you can
operate (one shot pulse output), monitor the status, and monitor for error (level input).
Therefore, you will be using two terminals on DO board and two terminals on DI board for one system
equipment.
For status monitoring, you can choose the name of the status, and for error status, you can choose the
name of the error and its icon color.
PLC DO board (QY40P)
Run
Stop
Control
PLC DI board (QX40)
Operation status
Error status
Monitoring

11.2 System Design Method

System design method for general-purpose control is outlined below.

11.2.1 Listing up of general-purpose equipment

General-purpose equipment needs to be listed up.
Control and monitoring of general-purpose equipment will be done through contact control using PLC.
Therefore, the equipment to be controlled should have the following signal specifications. TG-2000A can
only operate or only monitor the equipment, in that case, unused terminals should remain unconnected.
Signal specifications
Operation Non-voltage a-contact
One shot pulse output
Monitoring Non-voltage level input
1
Number of terminals assigned to one system equipment
74
One shot pulse
output signal
1P
1P
System
equipment 1
1P
1P
Level input signal
Figure 11-2 General-purpose control outline
Table 11-1 General-purpose control signal specifications
Contact ON
Signal 1 (operate)
Contact OFF
Contact ON
Signal 2 (stop)
Contact OFF
Contact ON
Signal 1
Contact OFF
Contact ON
Signal 2
Contact OFF
You can control and
monitor one system
equipment with one icon.
Contact specifications
approx. 1 second
approx. 1 second
Stop Run
Stop Run
Normal Error/trouble Normal
Terminal assignment/
equipment
2 terminals
Stop
2 terminals
Stop
1