Omron DR 170 14 manual Range

Klinkmann Automation Omron Ethernet DAServer			51
		or a -1 to test a client reaction
		on write errors).
		If the value of this item is zero,
		it cannot be poked.
$SYS$ReadComplete	Integer/	Used to access the state of	RANGE: -1, 0, 1
	ReadWrite	initial reads on all items in the
		corresponding device group.	1: Read
		The value is 1 if all active	complete (all
		items in a device group have	values have
		been read at least once. If at	been read).
		least one item in the device	0: Not all values
		group is activated, this item	have been read.
		changes to 0. It changes to 1	-1: All values
		if all items have been read	have been read
		successfully, or to -1 if at least	but some have a
		one item has a non-good	non-good quality.
		quality. Poking a 0 to this item
		resets the internal read states
		of all items in this device
		group. This resets this item to
		0. If all items are read again
		after this poke, this item
		changes back to 1 or -1.
$SYS$ItemCount	DWord/	Used to access the number of	RANGE:
	Read	items in the corresponding	0…2147483647
		device group. This item is	>=0: Number of
		read-only.	active items.
$SYS$ActiveItemCoun	DWord/	Used to access the number of	RANGE:
t	Read	active items in the	0…2147483647
		corresponding device group.	>=0: Number of
		This item is read-only.	active items.
$SYS$ErrorCount	DWord/	Used to access the number of	RANGE:
	Read	all items (active and inactive)	0…2147483647
		that have errors (non-good	>=0: Number of
		OPC quality) in the	all items (active
		corresponding topic. If the	and inactive) with
		communications status of a	errors.
		device group is bad, all items
		have errors. This item is read-
		only.
$SYS$PollNow	Boolean/	Poking a 1 to this item forces	RANGE: 0, 1
	ReadWrite	all items in the corresponding
		device group to be read
		immediately (all messages in
		this device group become
		due). This is useful if you want
		to force to get the newest
		values from the device,
		regardless of its update
		interval. This also works on

Omron Ethernet DAServer Ver 1.x User Manual Rev 1.4 17014m14