Omega Speaker Systems CIO-RELAY24, CIO-RELAY32 Programming Notes, Detailed Relay Control I/O Map

For example, to assemble the control byte that will turn on relays 0. 1. 3. 5 and 7 we can see from the chart below we need to write decimal 171 (hex AB):

RELAY	HEX	ON = 1	WEIGHT	DECIMAL	ON=1	WEIGHT
OP7	80	1	80	128	1	128
OP6	40	0	0	64	0	0
OP5	20	1	20	32	1	32
OP4	10	0	0	16	0	0
OP3	8	1	8	8	1	8
OP2	4	0	0	4	0	0
OP1	2	1	2	2	1	2
OP0	1	1	1	1	1	1
			AB			171

4.2 PROGRAMMING NOTES

WRITE = CONTROL: Write a byte to the register to control the relays. A one in the relay bit position turns the relay on.

READ = STATUS: Read the status of the relay control register. A one in the relay bit position indicates the relay is on.

ON & OFF for FORM C RELAYS:

On means that FORM C relay common is in contact with the Normally Open contact. Off means that FORM C relay common is in contact with the normally closed contact.

4.3 DETAILED RELAY CONTROL I/O MAP

The following section provides a detailed description of the register map and relay control registers.

Base Address +0 (applicable to all CIO-RELAY series boards).

RELAY	OP7	OP6	OP5	OP4	OP3	OP2	OP1	OP0
BIT No.	7	6	5	4	3	2	1	0
HEX Value	80	40	20	10	8	4	2	1
DECIMAL	128	64	32	16	8	4	2	1

Base Address +1 (RELAY16, 24 and 32 only)
RELAY	OP15	OP14	OP13	OP12	OP11	OP10	OP9	OP8
BIT No.	7	6	5	4	3	2	1	0
HEX Value	80	40	20	10	8	4	2	1
DECIMAL	128	64	32	16	8	4	2	1

Base Address +2 (RELAY24 and 32 only)
RELAY	OP23	OP22	OP21	OP20	OP19	OP18	OP17	OP16
BIT No.	7	6	5	4	3	2	1	0
HEX Value	80	40	20	10	8	4	2	1
DECIMAL	128	64	32	16	8	4	2	1

Base Address +1	(RELAY32 only)
RELAY	OP31	OP30	OP29	OP28	OP27	OP26	OP25	OP24
BIT No.	7	6	5	4	3	2	1	0
HEX Value	80	40	20	10	8	4	2	1
DECIMAL	128	64	32	16	8	4	2	1

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