Omron CS1W-DRM21, CJ1W-DRM21 Seven-Segment Display, Seven-segment Digits, Status Display

Nomenclature and Functions Section 2-1

2-1-3 Seven-Segment Display

In addition to the MS and NS indicators, DeviceNet Units have a 2-digit, 7- segment display that normally indicates the master node address. When an error occurs, the display will alternate between the error code and the node address of the faulty slave.

There are dot indicators at the lower-right corner of each digit. The left dot indicator shows whether or not the master is operating and whether the scan list is enabled or disabled. The right dot indicator shows whether or not the slave is operating.

Normal:	Master's node address
Error:	Error code and faulty node address

Indicates whether the slave is operating or stopped.

Indicates whether the master is operating or stopped and whether the scan list is enabled or disabled.

Seven-segment Digits

The following table shows the functions of the 7-segment digits.

	Status		Display
Remote I/O communications active and			Displays the mas-	Lit
normal			ter’s node address
			(00 to 63)
From power ON to completion of node				Flashing
address check (master function disabled,
slave function disabled, or both disabled)
Remote I/O communications started				Flashing (until com-
				munications actu-
				ally start)
From completion of the node address				Flashing
check until the start of remote I/O com-
munications
Error		Watchdog timer	Not lit
		Memory error or	Error code only	Lit
		system error
		Other errors	Alternately displays the error code and
			error node address (see diagram below)
Scan list		Reading	“- -”	Flashing
		Registered

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