409
Allocating I/O Data
Section 9-2
Alarm Status Area
The Bit Slave Unit’s Alarm Status Area contains the following 16 bits. These
bits indicate serious errors in the Unit.
Note
Bit Slave Units with Compact Connectors support only the EEPROM Data
Error Flag.
9-2
Allocating I/O Data
Bit Slave Units are allocated node address areas in units of two points (two
bits).
• Input Units and Output Units
Units with two points are allocated two bits (the node address set for the
Unit).
Units with four points are allocated four bits (the node address set for the
Unit and the next node address area).
• I/O Units
Units are allocated four bits (the input and output node address areas).
Two-point Input Units
Four-point Input Units
Bit
Content
Description
0
Reserved
---
1
EEPROM Data Error Flag
OFF: Normal
ON: Error occurred
Turns ON when there is an error in
the EEPROM data.
2
Reserved
---
3
Reserved
---
4
Reserved
---
5
Reserved
---
6
Reserved
---
7
Reserved
---
8
Reserved
---
9
Reserved
---
10
Power Short-circuit Detection Flag
OFF: Normal
ON: Short-circuit
Turns ON when there is a short in the
power supply connection to the con-
nected devices, including wiring mis-
takes and connected device failure.
11
Load Short-circuit Detection Flag
OFF: Normal
ON: Short-circuit
Turns ON when there is a short in the
load connection, including wiring mis-
takes and connected device failure.
12
Reserved
---
13
Reserved
---
14
Reserved
---
15
Reserved
---
Bit Input Area
1
0
Bit Input Area
3
2
1
0
Summary of Contents for CRT1 - 10-2009
Page 1: ...Cat No W457 E1 07 CompoNet Slave Units and Repeater Unit CRT1 Series OPERATION MANUAL...
Page 2: ......
Page 3: ...CRT1 Series CompoNet Slave Units and Repeater Unit Operation Manual Revised October 2009...
Page 4: ...iv...
Page 6: ...vi...
Page 10: ...x...
Page 16: ...xvi...
Page 24: ...xxiv Conformance to EC Directives 6...
Page 386: ...362 Units with Connectors Section 6 7...
Page 414: ...390 Temperature Input Units Section 7 5...
Page 430: ...406 Expansion Unit Specifications Section 8 2...
Page 494: ...470 Bit Slave Units with Compact Connectors Section 9 5...
Page 501: ...477 Repeater Unit Section 10 2 Dimensions 42 3 50 3 1 27 5 95 mm...
Page 502: ...478 Repeater Unit Section 10 2...
Page 508: ...484 CX Integrator Section 11 1...
Page 509: ...485 CX Integrator Section 11 1...
Page 602: ...578 Temperature Input Unit Functions Section 11 6...
Page 614: ...590 Device Maintenance Section 12 3...
Page 664: ...640 I O Power Supply Current Appendix E...
Page 672: ...648 Index...
Page 674: ...650 Revision History...