Author Topic: Fx2424 PLC backwards compatible with T100MD2424  (Read 691 times)

ccdubs

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Fx2424 PLC backwards compatible with T100MD2424
« on: December 09, 2019, 01:30:14 PM »
Hi,

Is the Fx2424 PLC backwards compatible with T100MD2424? I have had a bunch on inputs (including high speed counters) fail on an old T100MD2424 and was looking to replace with a Fx2424 but don't want to have to reinvent the wheel, reprogramme, commission, etc.

Thanks

support

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Re: Fx2424 PLC backwards compatible with T100MD2424
« Reply #1 on: December 09, 2019, 04:08:45 PM »
Fx2424 is NOT a drop-in replacement for T100MD2424. In most cases you can get by with small modifications if you want to use Fx2424 to replace T100MD2424+. Note the following differences:

1) Output 7 and 8 on T100MD2424 are PNP type (ON = 24VDC, OFF = 0V DC).  All outputs on Fx2424 are NPN types (ON = 0V, OFF = open circuit (with weak pull up to 24VDC)

2) On T100MD2424+ the Analog output 1 and 2 shared the pins with analog input 7 & 8.  On Fx2424 the analog outputs are on their own dedicated pins.

3) On T100MD2424+ the PWM channel 1 and 2 are on output 7 and 8.  On Fx2424 the PWM channel 1 to 4 are occupying output 5 to 8

4) On T100MD2424+ the high speed counters shared with input #3,4,5,6. On Fx2424 the high speed counters shared with input #1 to #6 (there is an additional high speed counter on Fx2424).

These difference may or may not be applicable to your applications, depending on whether you are using these features or output 7 & 8.

The exact same program that ran on the T100MD2424+ however can be compiled and transfer to the Fx2424. You just need to ensure that the special I/Os are wired to the correct terminals.
« Last Edit: December 21, 2019, 06:35:55 AM by support »
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