Measurement-computing CIO-RELAY08 Manuale Utente Scaricare il pdf (Pagina 10)

Table 4-2. Sample Coding to Turn ON Relays 0, 1, 3, 5, & 7

111111OP0

212212OP1

004004OP2

818818OP3

00160010OP4

32132201200P5

00640040OP6

128112880180OP7

WEIGHT

ON=1

DECIMALWEIGHTON=1HEXRELAY

Totals 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 terminal is in contact with the No rmally

Open contact.

OFF means that FORM C relay common terminal is in contact with the no rmally

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

1 2 ... 5 6 7 8 9 10 11 12 13 14 15 ... 19 20

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Measurement-computing CIO-RELAY08 Manuale Utente Pagina 10