AC 700F shows I/O Bus error after downgrade to V9.1 Rollup1a with TC9 ?

After downgrading an AC700 revision B CPU to Freelance Version 9.1 rollup 1 a with TC9

The LCD on the PM783 shows I/O error? Does anyone know what the cause is?

I suppose the IO firmware my also be an issuse here bu tcan anyone confirm?

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LJohnson1 Rank: 456

Asked 4 years ago

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Hello,

As of Version 9.2, 4 new I/O module types of S700 are supported as direct I/O:

• DX 731F - 230/120VAC input + relay output (8 in and 4 out)

• DX 722F - 24V input + relay output (8 in and 8 out)

• AO 723F - analog output (16 out)

• AI 731F - analog in incl. THC thermocouple (8 in)

In case you use any of those modules, downgrading to 9.1 could create an I/O error I guess.

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by LJohnson1 Rank: 456 on 8/5/2016 4:04:55 AM | Like (0) | Report

Hi Dieter. Thanks. We are not using any of those mentioned. We are using DC732F and AX722F

by Dieter Henkel AKS expert

Rank: 10 on 8/5/2016 4:51:02 AM | Like (0) | Report

Just to make sure: You have done EPROM download for 9.1RU1a and also for TC9?
Check which firmware version the PM 783 reports.

by Dieter Henkel AKS expert

Rank: 10 on 8/5/2016 5:23:46 AM | Like (0) | Report

One more question. Is one of your S700 I/O moduls a grey one?If yes, that could be the problem. The grey moduls run a firmware version 3, while the white S700 modules run firmware 1. On the PROFIBUS that doesn't matter, but on the direct I/O it does, because the V9.1RU1aTC09 doesn't support V3 firmware (if I remember correctly).

by LJohnson1 Rank: 456 on 8/10/2016 2:43:00 AM | Like (0) | Report

Hello Dieter I have tested with PM783F B2 and PM783F A7. Both CPU's run V9.1 R1a with TB 711F A0 but will not run with TB 711F C1. I have two of these C1 units and both exhibit the same IO Bus error? Is there a know issue with TB711F C1 and V9.1 R1a?

by Dieter Henkel AKS expert

Rank: 10 on 8/11/2016 8:03:28 AM | Like (0) | Report

Was not aware of this, but yes, there is an issue. TB711F Cx will not run with PM783 A/B in V9.1xx. Use TB711F A or upgrade to V9.2 or higher. R&D says a Product Bulletin is in the making.

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Dieter Henkel AKS expert

Rank: 10

Answered 4 years ago

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AC 700F shows I/O Bus error after downgrade to V9.1 Rollup1a with TC9 ?

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