Omron FQM1-MMA21, FQM1-CM001, FQM1-MMP21 operation manual Expanded System Configuration, Section

Expanded System Configuration Section 1-5

Set the PT communications settings for a 1:N or Standard NT Link. An NT

Link System is possible for either the peripheral port or the RS-232C port.

NT Link 1:N Mode

RS-232C

PT

NT Link 1:N Mode

RS-232C

RS-232C to RS-422A/485

Conversion Adapter

RS-422A/485

Applicable Ports

Coordinator Module

Peripheral port	RS-232C port
Yes	Yes
(See note.)

Note Turn ON pin 2 on the DIP switch on the front of the Coordinator Module and set the serial communications mode in the System Setup to an NT Link.

PT

PT

PT

Note (1) The FQM1 can be connected to any PT port that supports 1:N NT Links. It cannot be connected to the RS-232C ports on the NT30 or NT30C, be- cause these ports support only 1:1 NT Links.

(2)The Programming Console functionality of a PT (Expansion Function) cannot be used.

(3)When more than one PT is connected to the same FQM1, be sure that each PT is assigned a unique unit number. Malfunctions will occur if the same unit number is set on more than one PT.

(4)The NT Link System includes 1:1 and 1:N modes. These two modes are not compatible as serial communications modes.

Serial PLC Link Slave The FQM1 can be connected to a Serial PLC Link by linking to a Serial PLC Master. (It cannot be connected by the Complete Link Method.) Program-free data exchange can be achieved between the master and slave by connecting a CJ1M CPU Unit as the master and the FQM1 as the slave. The FQM1 con- nection is made to the RS-232C port on the Coordinator Module.

CIO 0080 to CIO 0099 in the Serial PLC Link Bit Area in the Coordinator Mod- ule are shared with the CJ1M master as shown below

Note Use a CJ1W-CIF11 RS-232C to RS-422A/485 Conversion Adapter when con- necting more than one FQM1 to the same CJ1M CPU Unit (1:N, where N = 8 max.).

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