Tri-M IR104-V4, User Manual

Page: 14 / 20

Page 13 IR104-V4 User Guide Rev A
3 Configuration
I/O Map
There are four I/O maps:
• Relay Output Control (ROC)
• Digital Input Reading (DIR)
• Input Change Flags (ICF), see page 14
• Interrupts Control Register (ICR), see page 15
Relay Output Control (ROC)
The ROC bank energizes and de-energizes through the I/O writes. They are two grouped banks of eight and
one bank of four. When an I/O read is executed, the relay output register is accessed. This allows the relay
data to be read back. To energize a relay (close contact), write a logic “1” to the corresponding bit in the
register bank. To de-energize a relay (open contact), write a logic “0” to the corresponding bit in the register
bank.
Relay SD7 SD6 SD5 SD4 SD3 SD2 SD1 SD0
ROC Bank 1 Relay 8 Relay 7 Relay 6 Relay 5 Relay 4 Relay 3 Relay 2 Relay 1
ROC Bank 2 Relay 16 Relay 15 Relay 14 Relay 13 Relay 12 Relay 11 Relay 10 Relay 9
ROC Bank 3 Not used Not used Not used Not used Relay 20 Relay 19 Relay 18 Relay 17
ROC I/O Map
Digital Input Reading (DIR)
The DIR bank is accessed through I/O reads and are grouped in two banks of eight and one bank of four. A
logic “0” read for an input indicates the corresponding physical input is “powered”. A logic “1” read on any input
indicates the corresponding physical input is “non-powered”.
ROC Grouping
Relay Output Address
ROC Bank 1 DO1 to DO8 I/O address = Base Address (0x00)
ROC Bank 2 DO9 to D16 I/O address = Base A 1 (0x01)
ROC Bank 3 DO17 to DO20 I/O address = Base A 2 (0x02)
Note
The I/O address is an
offset from the base
decoded address.
DIR Grouping
Bank Input Address
DIR Bank 1 DI1 to DI8 I/O address = Base A 4 (0×04)
DIR Bank 2 DI9 to DI16 I/O address = Base A 5 (0×05)
DIR Bank 3 DI17 to DI20 I/O address = Base A 6 (0×06)
Note
The I/O address is an
offset from the base
decoded address.
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