Created Date: March 13,2000

Created by: NickZim

I have a problem connecting a Remote Master unit (D4-RM) to a Remote Slave (D4-RS).

My setup is as follows I have base unit D4-08B-1 with A DL450 CPU then a D4-ECOM Card In The first Slot after the CPU then four D4-16NA input Cards then An Output Card D4-12TR and the another D4-16NA and finally on the Local Base a Remote Master (D4-RM).After the local base I have three Expansion bases with an assortment of Input and output cards that fill up the following expansion bases.Then I have the Remote Slave Base On the remote I/O Base. http://forum1.automationdirect.com/board/smile.gif

Software loaded into PLC to Allocate The Remote Inputs X560 - X577 which is the only card on my Remote Slave Base.

SP0

----! !-----------------LD

K1A

LDA

O7406

FILL

K0

This is A New Rung

SP0

----! !-----------------LDA

O40427

OUT

V7404

LD

K16

OUT

V7405

SET

670

Before Loading This Program To The PLC The Following Lights Are Illuminated

Remote Master

PWR ON RUN OFF

DIAG OFF PAR OFF

I/O OFF LINK OFF

MSTR ON

Remote Slave

PWR ON I/O OFF

RUN OFF PAR OFF

DIAG OFF LINK ON

Once I Have Loaded The Program And Power Cycled The PLC I Get The Following Light Illuminating

Remote Master

PWR ON RUN OFF

DIAG OFF PAR OFF

I/O ON LINK OFF

MSTR ON

Remote Slave

PWR ON I/O OFF

RUN OFF PAR OFF

DIAG OFF LINK ON

Rotary Switch Setting D4-RM set to 0 and D4-RS set to 1

All DipSwitch Settings have been set to run at 38.4 Baud on Both RM & RS

I Have Checked the Cabling and Believe the Cable Connection Are All Correct.

Please could anyone who has used these modules shed some light on my problem?

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Look forward to hearing from you out there

Created Date: March 14,2000

Created by: NickZim

Have Managed To Solve My Problem.You have to do the input and out put allocations for the whole Slave Base and in my case where there are no outputs on the slave base you load K0 to registers V7407,which is the number of output on the slave base.

This rung should be as follows if you are only using one RM & one RS unit.This tells the CPU that you have only one Slave module connected to the Remote Master.

----! !-----------------LD

K34

LDA

O7410

FILL

K0

It works like a dream by the way.Isn't is amazing if you read the manual properly how easy things are. http://forum1.automationdirect.com/board/redface.gif http://forum1.automationdirect.com/board/cool.gif http://forum1.automationdirect.com/board/biggrin.gif