Siemens IM151-3 PN HF (no Link LED)

y2kmfic

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• Oct 28, 2017

• #1

Happy Saturday!

I've never used the HF module before and am attempting to do some PROFIsafe testing, and the Link LEDs don't light up on either port, nor does the Link LED on the other end (switch, controller, etc.) light up. The module appears to boot fine, as the other LEDs are on/flashing. I've tried multiple working cables, unplugged from a working device and plug in to the HF, and still nothing.

I read as much documentation as I can find, and nothing points to this issue. Am I missing something, or do I have a dead unit? I don't have a SD card in the unit, but my non HF units don't need the SD card.

TIA.
CH

 

mk42

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• Oct 28, 2017

• #2

You shouldn't need the SD card.

Do you have the last module in place, to cap the bus?

Regardless, though, my guess is if you have no link lights, and have tested with multiple known good cables connected to multiple known good devices, odds are its a bad unit.

One final note: link lights might take a second or so to come on, so don't rush it.

 

sigmadelta

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• Oct 28, 2017

• #3

Do you have a power module immediately to the right of the IM and at least 1 I/O module?

 

hagos

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• Oct 29, 2017

• #4

Yes , what Sigmadelta have said is correct, also you have to make sure that the bus end piece is in place.

 

y2kmfic

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• Oct 29, 2017

• #5

Thanks for the replies!

Yes, I do have a power module, F I/O module, and end module. I didn't wire the power module, but I don't think that should effect the Link LED, but I'll wire it on Monday at report back.

Thanks again.
CH

 

sigmadelta

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• Oct 29, 2017

• #6

Please tell us the part numbers of each module in your rack, and make sure you are using the correct terminal modules, and that they are securely connected, along with the termination of the rack.

 

y2kmfic

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• Oct 30, 2017

• #7

Here are my modules in this order..
6ES7-151-3BA22-0AB0 INTERFACE MODULE IM151-3 PN HF
6ES7 138-4CA01-0AA0 24v Power Module
6ES7 138-4FA04-0AB0 4/8 F-DI
Terminating module

Again, the power module isn't wired, but I don't think that should effect the Link LED, should it?

TIA
CH

 

sigmadelta

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• Oct 30, 2017

• #8

I believe you need to assign an IP address to it via STEP 7 first.

 

sigmadelta

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• Oct 30, 2017

• #9

PS: and it has to be part of the HW config of your CPU.

 

y2kmfic

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• Oct 30, 2017

• #10

I don't think you understand.. the Link LED for the Ethernet port doesn't come on on the unit, or the other end of the cat5 cable (switch, controller, etc.). How am I supposed to assign an IP, if I can't connect to it. MMC maybe, but not sure.

CH

 

sigmadelta

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• Oct 30, 2017

• #11

The Link LED not on is described like this:

No connection to switch/IO controller.

I'm trying to remember if that meant that if there is no connection to a switch OR no connection to IO controller prevents the LINK from lighting up.

 

y2kmfic

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• Nov 1, 2017

• #12

HAH! Turns out the 6ES7-151-3BA22-0AB0 IM151-3 PN HF requires the MMC. If the MMC isn't in, then the ETH ports don't work at all.

The newer 6ES7-151-3BA23-0AB0 doesn't require the MMC. I would have tested with an MMC sooner but didn't know I had one (I actually "borrowed" it from Engineering ).

https://support.industry.siemens.co...nterface-released-for-delivery?dti=0&lc=en-WW


Thanks for the replies.
CH

 

mk42

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• Nov 2, 2017

• #13

y2kmfic said:

HAH! Turns out the 6ES7-151-3BA22-0AB0 IM151-3 PN HF requires the MMC. If the MMC isn't in, then the ETH ports don't work at all.

The newer 6ES7-151-3BA23-0AB0 doesn't require the MMC. I would have tested with an MMC sooner but didn't know I had one (I actually "borrowed" it from Engineering ).

https://support.industry.siemens.co...nterface-released-for-delivery?dti=0&lc=en-WW


Thanks for the replies.
CH

Click to expand...

Huh, learn something every day. Looks like that changeover happened in 2008. I'm not sure if I used any of those, or if we just always had the MMC and I never knew why.