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442
CompoBus/S I/O Link Units
Section 7-6
The input word (m+1) contains the 8 bits of data from the Master Unit and two
CompoBus/S communications flags.
Write the data to be transmitted to the Master Unit in the output word (n+1).
Note
(1) The 8 bits of I/O data are not always transmitted simultaneously. In other
words, 8 bits of data transmitted from the Master CPU Unit at the same
time will not always reach the Slave CPU Unit simultaneously, and 8 bits
of data transmitted from the Slave CPU Unit at the same time will not al-
ways reach the Master CPU Unit simultaneously.
When the 8 bits of input data must be read together, modify the ladder
program in the CPU Unit receiving the data. For example, read the input
data twice in succession and accept the data only when the two values
match.
(2) Unused bits in the CompoBus/S I/O Link Unit’s output word can be used
as work bits, but unused bits in the output slaves cannot be used as work
bits.
(3) Unused bits in input word cannot be used as work bits.
Determining the Node
Number and Making DIP
Switch Settings
Node Number
• The CompoBus/S I/O Link Unit is a Slave Unit with 8 input bits and 8 out-
put bits. The node number setting is made using the DIP switch; the
inputs and outputs share the same node number.
• The range of possible node number settings is determined by the type of
PC the Master Unit is mounted to and the settings on the Master Unit. For
details refer to the CompoBus/S Operation Manual.
Word m+1
15
00
07
08
09
CompoBus/S Communications Error Flag
0: Normal; 1: Error
CompoBus/S Communication Status Flag
0: Stopped; 1: Communicating
Data from the Master Unit
Word n+1
15
00
07
Data to be transferred to the Master Unit
Содержание CP1H-CPU - 05-2006
Страница 1: ...OPERATION MANUAL CP1H CPU Unit SYSMAC CP Series CP1H X40D CP1H XA40D CP1H Y20DT D Cat No W450 E1 02...
Страница 2: ...CP1H X40D CP1H XA40D CP1H Y20DT D CP1H CPU Unit Operation Manual Revised May 2006...
Страница 3: ...iv...
Страница 11: ...xii TABLE OF CONTENTS...
Страница 15: ...xvi...
Страница 19: ...xx...
Страница 31: ...xxxii Conformance to EC Directives 6...
Страница 71: ...40 Function Blocks Section 1 5...
Страница 133: ...102 Computing the Cycle Time Section 2 7...
Страница 169: ...138 CPM1A Expansion I O Unit Wiring Section 3 6...
Страница 411: ...380 Clock Section 6 8...
Страница 519: ...488 Replacing User serviceable Parts Section 10 2...
Страница 527: ...496 Standard Models Appendix A...
Страница 535: ...504 Dimensions Diagrams Appendix B...
Страница 628: ...597 Connections to Serial Communications Option Boards Appendix F Connecting to Unit...
Страница 629: ...598 Connections to Serial Communications Option Boards Appendix F...
Страница 659: ...628 PLC Setup Appendix G...
Страница 665: ...634 Index work words 159 write protection 370...
Страница 667: ...636 Revision History...