Omron V022-E3-1 operation manual 6-5-2Reading the NT600S Operating Statuses, Section

￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿ ￿￿￿￿￿$￿ Section 5-5

Battery (bit 13)

If the voltage of the backup battery for the NT600S memory becomes low, this bit is set to ON (1).

- This bit is valid only when DIP switch 2-8 is ON (1).

￿- Backup battery is optional. Screen switch strobe flag (bit 12)

When the screen displayed on the NT600S is switched by a designation from the PC or by the standalone function, the screen switch strobe flag comes ON (1). On notification to the PC, it returns to the OFF (0) status.

For details on how the screen switch strobe flag is used, see “Notifying the dis-

￿play screen to the PC” (page 162). Numeral setting strobe flag (bit 11)

When numerical data is input to a numeral table using the NT600S numeral set- ting function, the numeral setting strobe flag comes ON (1). On notification to the PC, it returns to the OFF (0) status.

For details on how the numeral setting strobe flag is used, see “Notification of Numbers to the PC” (page 189).

6-5-2 Reading the NT600S Operating Statuses

This section explains how to determine the status of the NT600S, and ascertain its operating status.

To ascertain the operating status of the NT600S, “PT status” is used.

The NT600S automatically notifies information such as the operating status to the PT status word of the PT status notify area (PT → PC) allocated to the PC memory as shown below.

Notification of operation mode:	PT operating status
Notification of low battery voltage:	Battery
Notification of screen switching:	Screen switch strobe flag

￿Notification of numerical data upgrade: Numeral setting strobe flag Restrictions on allocating words

The PT status notify area (PT → PC) can be allocated to the PC memory areas listed in the following table.

Symbol	C Series PCs	Allocated	CVM1/CV Series PCs	Allocated
DM	Data memory	✓	Data memory	✓
CH	Internal/Special Relay	✓	Internal/Special Relay	✓
TIM	Timer		Timer
CNT	Counter	￿	Counter
HR	Holding Relay	✓	--
AR	Auxiliary Relay	✓	Auxiliary Relay	￿
LR	Link Relay	✓	--
			✓ : OK ￿: NG

￿￿￿