Page 16
IR104-V4 User Guide
Rev A
Base Addresses
There are four decoded base addresses: 0x240, 0x260, 0x280, and 0x300. They are jumper selectable using
the address select blocks JP1 and JP2.
Register
0x240
0x260
0x280
0x300
Description
ROC Bank 1
0x240
0x260
0x280
0x300 Relays 1 to 8
ROC Bank 2
0x241
0x261
0x281
0x301 Relays 9 to 16
ROC Bank 3
0x242
0x262
0x282
0x302 Relays 17 to 20
DIR Bank 1
0x244
0x264
0x284
0x304 Inputs 1 to 8
DIR Bank 2
0x245
0x265
0x285
0x305 Inputs 9 to 16
DIR Bank 3
0x246
0x266
0x286
0x306 Inputs 17 to 20
ICF Bank 1
0x248
0x268
0x288
0x308 Change Flag Inputs 1 to 8
ICF Bank 2
0x249
0x269
0x289
0x309 Change Flag Inputs 9 to 16
ICF Bank 3
0x24A
0x26A
0x28A
0x30A Change Flag Inputs 17 to 20
ICR Bank 1
0x24C
0x26C
0x28C
0x30C Interrupt Enables Inputs 1 to 8
ICR Bank 2
0x24D
0x24D
0x28D
0x30D Interrupt Enables Inputs 9 to 16
ICR Bank 3
0x24E
0x26E
0x28E
0x30E Interrupt Enables Inputs 17 to 30 & IRQ output enables 4, 5, 6 & 7
1
1
JP1
JP2
Not Installed
Not Installed
3 Configuration
1
1
JP1
JP2
Installed
Not Installed
1
1
JP1
JP2
Not Installed
Installed
Base Address
1
1
JP1
JP2
Installed
Installed
0x240
0x260
0x280
0x300
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