Bradley Smoker PLC-5 user manual Must Match, BT000000 BT010000 BT011000 BT011001 BT011040

Communicating with a PLC-5 Adapter Channel 7-13

Program multiple block-transfers to an adapter-mode controller channel by matching block-transfer instructions in the supervisory controller to control files in the adapter.

In this example, the first block transfer in the supervisor uses the BTR control word listed in group 0 module 0, which is BT010:000.

Supervisor Program

BTW
RACK	4*
GROUP
	0
MODULE
	0
BTW
RACK	4*
GROUP
	1
MODULE
	0
BTW
RACK	4*
GROUP	1
MODULE	1
BTR
RACK	4*
GROUP	1
MODULE	1

Adapter Configuration
RACK		4*	* Must Match
STARTING GROUP		0
SIZE		FULL
Group	Module	BTW Control		BTR Control
0	0	BT000:000		BT010:000
0	1	BT000:000		BT000:000
1	0	BT000:000		BT011:000
1	1	BT011:001		BT011:040

	Block transfer further defined in the adapter-mode processor channel via Data Monitor
	Address	EN	ST	DN	ER	CO	EW	NR	TO	RW	RLEN	DLEN	FILE	ELEM	R	G	M
BT10:0 points to file 24 and element 10 and
	BT10:0	0	0	0	0	0	0	0	0	0	64	0	24	10	0	0	0
has a length of 64 words.

Assuming that file 24 has been created as an integer file, the data written down from the first block-transfer will be found in N24:10 to N24:73. The second block-transfer in the supervisor writes its data to the file to which BT11:0 points, and the third block-transfer writes its data to the file to which BT11:40 points.

You can have up to 15 writes and 15 reads. Each block transfer to a particular group/module location uses the I/O addresses for that rack/group for status bits. These locations are lost to discrete transfer. Therefore, if you configure all available 15 block-transfer read/write pairs, no bits will be available for discrete transfer. See page 7-15for more information.

IMPORTANT

Adapter-mode block-transfer reads and block-transfer writes in the same group/module location must have the same length.

Publication 1785-UM012D-EN-P - July 2005