X8 Instruction Set Reference Manual
SFR (Special Function Register)
3
-
9
The following tables show the details of each General Communication Status
block allocated from 0 to 5.
General Communication Status Block
43~69
Modbus Slave Diagnostic Counters Block
70
End of List Category Identifier Code (Always 0)
Word
Bit
Description
0
-
Communications Channel Status Information
Category Identifier Code
1
-
Length
2
-
Format Code
3
-
Communications Configuration Error Code
4
0
ICP - Incoming Command Pending Bit
This bit is set when the
X8 Series PLC
determines that
another device has requested information from this PLC.
Once the request has been satisfied, the bit is cleared.
1
MRP - Incoming Message Reply Pending Bit
This bit is set when the
X8
Series PLC
determines that
another device has supplied the information requested by
a MSG instruction executed by this controller. When the
appropriate MSG instruction is serviced, this bit is
cleared.
2
MCP - Outgoing Message Command Pending Bit
This bit is set when the
X8
Series PLC
has one or more
MSG instructions enabled and in the communication
queue. This bit is cleared when the queue is empty.
3
SSB - Selection Status Bit
This bit indicates that the
X8
Series PLC
is in the
System Mode. It is always set.
4~14
System Reserved
15
Communications Toggle Push Button Communications
Defaults Active.
This bit is set whenever Channel 0~2 are in the default
communications mode.
The bit is cleared when Channels are in user configured
communications mode.
Word
Descriptions
Summary of Contents for X8 Series
Page 1: ...Catalog Number s X8 M14DDT X8 M16DDR X8 M32DDT X8 Instruction Manual Reference Manual ...
Page 16: ......
Page 64: ...X8 Instruction Set Reference Manual 2 12 X8 Series PLC Memory and Data Table ...
Page 166: ...X8 Instruction Set Reference Manual 7 8 Relay Type Bit Instructions ...
Page 180: ...X8 Instruction Set Reference Manual 8 14 Timer and Counter Instructions ...
Page 205: ...X8 Instruction Set Reference Manual Math Instructions 10 17 ...
Page 206: ...X8 Instruction Set Reference Manual 10 18 Math Instructions ...
Page 212: ...X8 Instruction Set Reference Manual 11 6 Converion Instructions ...
Page 218: ...X8 Instruction Set Reference Manual 12 6 Logical Instructions ...
Page 236: ...X8 Instruction Set Reference Manual 15 8 Shift and FIFO LIFO Instructions ...
Page 242: ...X8 Instruction Set Reference Manual 16 6 Sequencing Instructions ...
Page 252: ...X8 Instruction Set Reference Manual 18 4 Input and Output Instructions ...
Page 280: ...X8 Instruction Set Reference Manual 20 12 PID Control ...
Page 296: ...X8 Instruction Set Reference Manual 21 16 ASCII Instructions ...
Page 308: ...X8 Instruction Set Reference Manual 22 12 Communications Instructions ...
Page 312: ...Appendix A 4 System Error Code ...
Page 313: ...Appendix B MSG Instruction Error Code MSG Instruction Error Code ...
Page 322: ...Appendix B 10 MSG Instruction Error Code ...
Page 325: ...ASCII Character Set Appendix C 3 ...
Page 326: ...Publication number X8 RM001A EN September 2012 ...
Page 327: ...Copyright 2012 RS Automation Co Ltd All rights reserved ...