1756-IA 16/A

[TOPTAB]

Hi, I have two quick questions:
1- Could I use 1756-IA16/A with TTL inputs? Sourcing (PNP)? Sinking (NPN)? Either one?
2- What does /A in the part number indicate?

 

[plvlce]

1756-IA16 is a 120V AC input module. Consult the module specifications if you need to find a suitable module.

The /A is a shorthand indicating that it is series A, ie the first version. If Rockwell were to release a version with different hardware (for example due to component obsolescence) the new version would be series B, then C for a change after that &c.

 

[TOPTAB]

Thanks for your response plvlce, and sorry for the typo, I meant 1756-IB16 instead of the AC input card I wrote yesterday. With the version question out of the way:
For the DC input card 1756-IB16, could I use it with TTL inputs? Sourcing (PNP)? Sinking (NPN)? Either one?

 

[widelto]

Go to:

https://literature.rockwellautomation.com/idc/groups/literature/documents/td/1756-td002_-en-e.pdf

Page 41

 

[alan_505]

See page 41 of the manual linked to in post #2, it will give you the voltage values that it will switch at.
If you want to make sure that it will switch with TTL inputs you will need a 1756-IG16, but they are low = true and high = false.

 

[Bit_Bucket_07]

If you want to make sure that it will switch with TTL inputs you will need a 1756-IG16, but they are low = true and high = false.

Of course, you can always flip the bits with an Exclusive Or if you don't want to deal with the inverted inputs.

 

[TOPTAB]

Thank you all for your help with your replies.