112
I/O Area and I/O Allocations
Section 4-2
For a CPU Unit with 40 I/O points (shown above), a total of 24 input bits are
allocated to the input terminal block. The bits that are allocated are input bits
CIO 0.00 to CIO 0.11 (i.e., bits 00 to 11 in CIO 0) and input bits CIO 1.00 to
CIO 1.11 (i.e., bits 00 to 11 in CIO 1).
In addition, a total of 16 output bits are allocated to the output terminal block.
The bits that are allocated are output bits CIO 100.00 to CIO 100.07 (i.e., bits
00 to 07 in CIO 0) and output bits CIO 101.00 to CIO 101.07 (i.e., bits 00 to 07
in CIO 1).
The upper bits (bits 12 to 15) not used in the input words cannot be used as
work bits. Only the bits not used in the output words can be used as work bits.
4-2-2
I/O Bits Allocated to Expansion I/O Units
There are Expansion I/O Units for expanding inputs, for expanding outputs,
and for expanding both input and outputs. I/O bits starting from bit 00 in the
next word after the word allocated to the previous Expansion Unit, Expansion
I/O Unit, or CPU Unit are automatically allocated. This word is indicated as
“CIO m” for input words and as “CIO n” for output words.
Unit
Input bits
Output bits
No. of
bits
No. of
words
Addresses
No. of
bits
No. of
words
Addresses
Unit with 8 inputs
CP1W-8ED
8 bits
1 word
CIO m (bits 00 to 07)
---
None
None
Unit with
8 outputs
Relays
CP1W-8ER
---
None
None
8 bits
1 word
CIO n (bits 00 to 07)
Sinking
transistors
CP1W-8ET
---
None
None
8 bits
1 word
CIO n (bits 00 to 07)
Sourcing
transistors
CP1W-8ET1
---
None
None
8 bits
1 word
CIO n (bits 00 to 07)
Unit with
16 out-
puts
Relays
CP1W-16ER
---
None
None
16 bits 2 words CIO n (bits 00 to 07)
CIO n+1 (bits 00 to 07)
Sinking
transistors
CP1W-16ET
---
None
None
16 bits 2 words CIO n (bits 00 to 07)
CIO n+1 (bits 00 to 07)
Sourcing
transistors
CP1W-16ET1
---
None
None
16 bits 2 words CIO n (bits 00 to 07)
CIO n+1 (bits 00 to 07)
Unit with
20 I/O
Relays
CP1W-20EDR1
12 bits 1 word
CIO m (bits 00 to 11)
8 bits
1 word
CIO n (bits 00 to 07)
Sinking
transistors
CP1W-20EDT
12 bits 1 word
CIO m (bits 00 to 11)
8 bits
1 word
CIO n (bits 00 to 07)
Sourcing
transistors
CP1W-20EDT1
12 bits 1 word
CIO m (bits 00 to 11)
8 bits
1 word
CIO n (bits 00 to 07)
Unit with
32 out-
puts
Relays
CP1W-32ER
---
None
None
32 bits 4 words CIO n (bits 00 to 07)
CIO n+1 (bits 00 to 07)
CIO n+2 (bits 00 to 07)
CIO n+3 (bits 00 to 07)
Sinking
transistors
CP1W-32ET
---
None
None
32 bits 4 words CIO n (bits 00 to 07)
CIO n+1 (bits 00 to 07)
CIO n+2 (bits 00 to 07)
CIO n+3 (bits 00 to 07)
Sourcing
transistors
CP1W-32ET1
---
None
None
32 bits 4 words CIO n (bits 00 to 07)
CIO n+1 (bits 00 to 07)
CIO n+2 (bits 00 to 07)
CIO n+3 (bits 00 to 07)
Unit with
40 I/O
Relays
CP1W-40EDR
24 bits 2 words CIO m (bits 00 to 11)
CIO m+1 (bits 00 to 11)
16 bits 2 words CIO n (bits 00 to 07)
CIO n+1 (bits 00 to 07)
Sinking
transistors
CP1W-40EDT
24 bits 2 words CIO m (bits 00 to 11)
CIO m+1 (bits 00 to 11)
16 bits 2 words CIO n (bits 00 to 07)
CIO n+1 (bits 00 to 07)
Sourcing
transistors
CP1W-40EDT1
24 bits 2 words CIO m (bits 00 to 11)
CIO m+1 (bits 00 to 11)
16 bits 2 words CIO n (bits 00 to 07)
CIO n+1 (bits 00 to 07)
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: ......