CV500-SLK21 datasheet(45/182 Pages) OMRON

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Display Modes

The display mode selector allows one of four modes to be selected. By pressing

the switch successively, the four modes can be sequentially accessed. The cur-

rent mode is displayed in the form of a dot on the display. The following diagram

illustrates the four possible modes.

Lit in mode 1

Lit in mode 2

Lit in mode 3

Lit in mode 4

“0000” is displayed until the I/O Connecting Cables are connected properly.

Mode 1 displays the address of the first word on each Rack. The following exam-

ple illustrates the mode 1 display for a given Rack.

16-

pt.

I/O

Word

Indicates mode 1

Word

16-

pt.

I/O

Mode 2 indicates the operating status of the CPU as well as the rack number.

Indicates the CPU is in the RUN mode, a non-fatal error has occurred,

a Peripheral Device is connected, and the rack number is 2.

Indicates the rack number

Indicates whether or not Peripheral Devices are connected.

: A Peripheral Device is connected to the CPU or to an I/O Inter-

face Unit.

: No Peripheral Device is connected to the CPU or to an I/O Inter-

face Unit.

Note

Only one Peripheral Device can be connected to the CPU and I/O

Interface Units for each PC, but three additional Peripheral De-

vices can be connected to the SYSMAC BUS/2 Slave Racks.

Indicates mode 2

Indicates the error status of the CPU.

: A fatal error has occurred.

: A non-fatal error has occurred.

: No error has occurred.

Indicates the operating status of the CPU.

: The CPU is operating.

: The CPU has stopped.

In mode 3, data can be output to the display by the I/O DISPLAY instruction

(IODP(189)). The binary information can be display in hexadecimal format (0 to

F) or as segments of a 7-segment display. For details on the I/O DISPLAY in-

struction, refer to the

CV-series PC Operation Manual: Ladder Diagrams.

Mode 4 displays only the mode number dot.

Rack Components

Section 2-3

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