PID control of heater with Mitsubishi PLC
We introduced how to control PID control using PLC earlier, but this time, we will use Mitsubishi PLC to introduce how to control the heater PID. PLC used FX3UC and temperature uptake used FX2N-8AD. Contents1 Capture the current temperature to be controlled into PLC2 Temperature control of heater using PID dedicated instruction3 Set the required […]
PID control of heater with keyence PLC
When performing temperature control of the heater, it is common to use a dedicated temperature controller (such as E5CC), but if the heater to control increases, it is also necessary to have a temperature controller, and it is also very difficult to arrange it on the board. It becomes. This time, we will introduce how […]
Replacement of OMRON C-type PLC
This is an example of PLC replacement for equipment used in a food factory in Saitama Prefecture. We replaced OMRON C-type PLC C28P with CP series PLC CP1E. Contents1 Obtained a paper-based copy of the C28P ladder before it was replaced. 2 Manually enter the program for the replaced CP1E.3 OMRON PLC C28P before replacement4 […]
Mitsubishi PLC GX Configurator-SC RS-232C unsynchronous data transfer with protocol communication.
When performing protocol communication with a partner device such as a barcode reader using the unsynchronous data transfer of the serial communication unit of a Mitsubishi Q series PLC, it was necessary to create a ladder program for all communication processing.Using the communication protocol support function of GX Configurator-SC, you can register the protocol for […]
PLC Remote Maintenance Test [1] Monitor and change the program of a PLC at a remote location.
When it becomes necessary to monitor the PLC programs of facilities and equipment installed in remote locations, or to investigate the programs, it is usually necessary to visit the site to take action, but due to the current impact of the new coronavirus infection, it may become difficult to visit in the future.Remote work is […]
The "MODE" and "RUN" lamps of the Mitsubishi PLC Q series CPUs turn off and do not operate
Have you ever been in a hurry because the "MODE" and "RUN" lamps of the CPU unit did not light up when you turned on the power of the PLC? Contents1 Why the "MODE" lamp of the CPU unit does not light up on a Q-series PLC2 Cause of the CPU unit's "MODE" lamp not […]
Fuji Electric PLC MICREX-F Series Ladder data backup
We received a request from a company operating plating-related equipment in Tokyo to back up the ladder data of an old Fuji Electric PLC.The PLC model is Fuji Electric MICREX-F series FPU 080A-A10, which is aging due to the plating environment, and they are considering replacing it with MICREX-SX series in the future. Contents1 Prepare […]
Pay attention when using the Keyence PLC timer instruction [TMR]
The timer instruction in a sequence program adds up the time while the input condition is ON, and when the set value is reached, the specified device turns ON. When you design a sequence program for a device, you are sure to use the timer instruction.In this article, I will show an example of an […]
Simple CPU communication by Ethernet connection between Mitsubishi Q PLC and FX PLC
The data communication method between Mitsubishi's Q series PLC and FX series PLC is simple CPU communication by Ethernet connection. Contents1 What is simple CPU communication?2 Example of simple CPU communication between Q PLC and FX PLC3 Check communication between PLCs4 Simple CPU communication between Q PLC and FX PLC summary What is simple CPU […]
Control RS232C devices from PLC via Ethernet communication
To control RS232C-equipped devices with a PLC, a serial communication unit is required, and there are some limitations such as one-to-one communication to the port, and the communication distance is usually less than 15m. The RS232C-Ethernet converter enables 1-to-n communication with multiple RS232C-equipped devices at a distance of 100m from the PLC's built-in Ethernet port […]