Hi, please its possible to use VGA 9 pin male and female to set up communication for AB 1400 PLC and Delta HMI B Series ?

[Nyame Ephraim 0]

Hi, please I wish to understand something, I understand communication for AB 1400 and Delta HMI can be achieved using RS 232 communication cable and wiring the pins according to HMI manual specifications. Now I don’t have RS 232 communication cable, but I have VGA 9 pin male and female communication cable,

Please any idea on how I can communicate the PLC and HMI using 9 pin VGA male and female ?

How can i use VGA 9 pin male and female to communicate from my PLC to HMI.pdf

[Ken Roach 194]

Video Graphics Adapter (VGA) connectors are about the same size and shape but have different pins (15).   

The MicroLogix 1400 has an ordinary 9-pin "DB9" RS-232 connector, which you can see is a Male (pin) connector.    The pinout is for a "Data Terminal Equipment" type port, on which Pin 2 is Receive (Rx) and Pin 3 is Transmite (Tx).

This is the same pinout and style of port that you would find on a typical personal computer.

The Delta HMI you posted a picture of appears to be a DOP-B07S411.    It has at least two communication ports on the back, which can be configured for RS-232 as well as for other interfaces like RS-485.

The DOP Connection Guide manual I was able to find for the Delta HMI suggests that the DB9 Male plug is also a DTE style plug, where Pin 2 is Rx and Pin 3 is Tx.

That means that your serial cable must be a "null modem" type that swaps Pin 2 and Pin 3.    Or, you can add a "null modem adapter" that internally swaps pins 2 and 3.

There is no way to tell from a picture what type of wiring is inside an RS-232 cable.   You must either have its specification sheet or measure continuity with a meter from end-to-end.

 

 

[Nyame Ephraim 0]

thank you for the reply 

i have the DP 9 Adapter male and female, the i model i have i can open it and do the connection, now i wish to understand once more please, can communication for the AB 1400 PLC and Delta HMI DOP B07S411 BE created using the DB 9 Pin male and female ? 

Wirring DP 9 adapters.pdf

[Joe E. 259]

As Ken mentioned, a photo of the outside of the cable is insufficient. If it's a "standard" serial cable, it's a straight through pin 1 to pin 1, pin 2 to pin 2, etc. cable, which will require using a null modem adapter.

If the Delta HMI supports the AB DF1 protocol over RS232, then you can get it to talk to the ML1400.