113
I/O Area and I/O Allocations
Section 4-2
■
I/O Bit Addresses
Units 8 Input Points (CP1W-8ED)
Eight input bits are allocated in one word (bits 00 to 07 in CIO m).
Only one word (8 bits) is allocated to an 8-input Expansion Input Unit. No out-
put words are allocated. Input bits 08 to 15 are always cleared by the system
and cannot be used as work bits.
Units with 8 Output Points (CP1W-8E
@@
)
Eight output bits are allocated in one word (bits 00 to 07 in CIO n+1).
Only one word (8 bits) is allocated to an 8-output Expansion Output Unit. No
input words are allocated. Output bits 08 to 15 can be used as work bits.
Units with 16 Output Points (CP1W-16E
@@
)
Sixteen output bits in two words are allocated in two words (bits 00 to 07 in
CIO n and bits 00 to 07 in CIO n+1).
Two words (16 bits) are allocated to a 16-output Expansion Output Unit. No
input words are allocated. Output bits 08 to 15 can be used as work bits.
Units with 20 I/O Points (CP1W-20ED
@@
)
Twelve input bits are allocated in one word (bits 00 to 11 in CIO m). Eight out-
put bits are allocated in one word (bits 00 to 07 in CIO n).
One input word (12 bits) and one output word (8 bits) are allocated for a 20-
point Expansion I/O Unit.
Input bits 12 to 15 are always cleared by the system and cannot be used as
work bits. Output bits 08 to 15, however, can be used as work bits.
Units with 32 Output Points (CP1W-32E
@@
)
Thirty-two output bits are allocated in four words (bits 00 to 07 in CIO n, bits
00 to 07 in CIO n+1, bits 00 to 07 in CIO n+2 and bits 00 to 07 in CIO n+3).
Four words (32 bits) are allocated to a 32-output Expansion Output Unit. No
input words are allocated. Output bits 08 to 15 can be used as work bits.
15 14 13 12
11 10 09
08 07
06
05
04 03 02 01 00
m
Do not use.
Inputs
15 14 13 12
11 10 09 08 07
06
05
04 03 02 01 00
n
Can be used as work bits.
Outputs
15 14 13 12
11 10
09 08
07 06
05 04 03 02 01
00
n
n+1
Output
bits
Can be used as work bits.
15 14
13 12
11 10
09 08 07
06
05 04 03 02 01 00
n
Do not use.
Can be used as work bits.
Output bits
Input bits
m
15 14 13 12
11 10
09 08
07 06
05 04 03 02 01
00
n
n+1
n+2
n+3
Output
bits
Can be used as work bits.
Summary of Contents for CP1L-EL20DR-D
Page 3: ...CP1L EL20D CP1L EM30D CP1L EM40D CP1L EL EM CPU Unit Operation Manual Produced July 2017...
Page 4: ...iv...
Page 10: ...x...
Page 22: ...xxii...
Page 34: ...xxxiv Software Licenses and Copyrights 7...
Page 192: ...158 Trial Operation and Debugging Section 5 3...
Page 250: ...216 Automatic Clock Adjustment and Specifying Servers by Host Name Section 6 7...
Page 666: ...632 Trouble Shooting Section 11 7...
Page 696: ...662 Standard Models Appendix A...
Page 805: ...771 Connections to Serial Communications Option Boards Appendix F Connecting to Unit...
Page 806: ...772 Connections to Serial Communications Option Boards Appendix F...
Page 836: ...802 PLC Setup Appendix G...
Page 838: ...804 TCP Status Transitions Appendix H...
Page 840: ...806 Ethernet Network Parameters Appendix I...
Page 842: ...808 Buffer Configuration CP1L EL EM Appendix J...
Page 844: ...810 Ethernet Specifications Appendix K...
Page 851: ...Index 817 work words 118 write protection 447...
Page 852: ...818 Index...
Page 854: ...820 Revision History...
Page 855: ......