Using 1:1 Data Links

 

Section 7-2

7-1-2 Specifications

 

 

 

 

 

 

 

 

Item

Specification

 

 

 

 

 

Connection

Connection of 2 PCs through their RS-232C ports (prepared

 

method

cable).

 

 

 

 

Note RS-422A/485 ports can also be connected if a 4-wire con-

 

 

nection method is used.

 

 

 

 

 

Applicable PCs

CQM1H, CQM1, CPM1, CPM1A, CPM2A, CPM2C, or

 

 

SRM1(-V2), C200HX/HG/HE, C200HS

 

 

There are restrictions in the number of words that can be

 

 

linked for some PCs.

 

 

 

 

 

 

 

 

Number of nodes

2

 

 

 

linked

 

 

 

 

 

 

 

 

Number of words

64 words, LR 00 to LR 63

32 words sent per node

 

linked

 

 

 

 

32 words, LR 00 to LR 31

16 words sent per node

 

 

 

 

 

 

 

 

16 words, LR 00 to LR 15

8 words sent per node

 

 

 

 

 

Linked words

One of three groups listed above

 

 

 

 

 

 

Link word setting

PC Setup in master PC

 

 

 

 

 

 

Order of allocation

Words allocated to master PC first and then to slave PC.

 

 

 

 

Startup method

Automatic startup after turning ON power to master and slave

 

 

PCs.

 

 

 

 

 

 

 

 

Status flags

None

 

 

7-2 Application Procedure

1, 2, 3... 1. Turn OFF the power supply to the PC.

2.Mount the Board.

3.Connections

Connect the external devices using RS-232C or RS-422 cables. The TERM and WIRE switches on the front panel of the Board must be set if the Board is connected using the RS-422A/485 port.

The CPU Unit can be connected to a Programming Console, the CX-Pro- grammer, or the CX-Protocol as required.

4.Turn ON power.

5.Set the PC Setup settings for the Serial Communications Board.

Use a Programming Console, the CX-Programmer, or the CX-Protocol to set the settings in the PC Setup between DM 6550 and DM 6559.

Note The settings stored in these words are read constantly; the PC does not need to be restarted or reset when changes are made to the set- tings. They will be updated automatically as soon as they are changed.

The following table shows the master PC settings for a 1:1 Data Link for LR 00 to

LR 63.

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Omron CQM1H-SCB41 operation manual Specifications, Section