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General => Technical support => Topic started by: dan on September 27, 2004, 11:45:02 AM

Title: CPU status indicator
Post by: dan on September 27, 2004, 11:45:02 AM

HI,

I just power up a TM2424.
The CPU status indicators LEDs are off all the time.

From what I know they are suppose to go on during the power up and during the transfer of the program

I'm missing something or there is a problem with this unit ?

Dan

Title: Re:CPU status indicator
Post by: support on September 27, 2004, 12:42:40 PM

T100MD2424+ requires a special "MCR" power input to function properly.

You have to connect +24V to the "Vp" connector which is the center terminal between the "0V" terminal and "PW1" terminal. Pls read the installation guide which explains the function of Vp terminal. It is used as a "Master Control Relay" (MCR) input for controlling power to the PLC outputs.