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9-6
9.4 Check a Slave Station Which Has Produced an Error
(DT9131(DT90131) to DT9135(DT90135))
During remote I/O operation, and when any of the following errors occurs, you can determine on which
slave station has produced the error (its station number and communication path) by monitoring the
system data registers. Errors you can check: - Communication error - Momentary breakdown on a
slave station - Error in a slave station unit where slave unti is installed
Items you can check
1. The slave station number where an error is occurring.
2. The slave station numbers where errors have occurred.
3. The slave station number where a unit has produced an error.
Note:
The item No. 3 cannot be checked with the I/O terminal board, I/O terminal unit or I/O link unit.
Procedure
1. Checking a communication path where an error is occuring
When an error occurs on the communication path of a remote I/O system, the corresponding special
internal relay (R9058 through R905B) will be turned ON as shown below.
Relay number
Description
R9058
When an error occurs in master 1: ON
R9059
When an error occurs in master 2: ON
R905A
When an error occurs in master 3: ON
R905B
When an error occurs in master 4: ON
By monitoring special data registers DT9136(DT90136) and DT9137(DT90137), you can check the type
or source of an error and teh bad master unit.
[Example]
In the following system and condition, R9059 will be turned ON. (Error on the remote I/O ssytem of
master 2)
Summary of Contents for MEWNET-F
Page 9: ...Chapter 1 Functions and Restrictions of the Unit ...
Page 19: ...Chapter 2 Part Names and Functions ...
Page 40: ...2 22 ...
Page 41: ...Chapter 3 Unit Specifications ...
Page 52: ...3 12 ...
Page 53: ...Chapter 4 Installation and Wiring ...
Page 62: ...4 10 ...
Page 63: ...Chapter 5 Connection for the Remote I O System ...
Page 75: ...Chapter 6 Remote I O Map ...
Page 84: ...6 10 ...
Page 85: ...Chapter 7 Operation Modes for Controlling MEWNET F ...
Page 97: ...Chapter 8 Control by MEWNET F ...
Page 108: ...8 12 Flowchart ...
Page 110: ...8 14 ...
Page 111: ...Chapter 9 Troubleshooting ...
Page 120: ...9 10 ...
Page 121: ...9 11 9 5 2 When the ALARM LED is ON ...
Page 122: ...9 12 9 5 3 When the Communication LED on the Master Unit does Not Flash Normally ...
Page 123: ...9 13 When the COMM LED is OFF ...
Page 124: ...9 14 When the COMM LED is ON ...
Page 125: ...9 15 9 5 4 When the Communication LED on a Slave Station does Not Flash Normally ...
Page 126: ...9 16 When the COMM LED is OFF ...
Page 127: ...9 17 When the COMM LED is ON ...
Page 128: ...9 18 9 5 5 When the CPU does Not Operate ...
Page 129: ...9 19 9 5 6 When the Input Output Function of a Slave Station does Not Work ...
Page 130: ...9 20 9 5 7 When the Memory Access Function for the Advanced Unit s Memory does Not Work ...
Page 134: ...9 24 ...
Page 135: ...Chapter 10 Dimensions ...
Page 136: ...10 2 10 1 FP2 Multi wire Link Unit AFP2720 10 2 FP3 Remote I O Master Unit AFP3742 ...
Page 137: ...10 3 10 3 FP2 Remote I OSlave Unit AFP2745 10 4 FP3 Remote I OSlave Unit AFP3745 ...
Page 141: ...10 7 10 8 FP0 I O Link Unit AFP0732 ...
Page 142: ...10 8 ...
Page 143: ...Chapter 11 Appendix 1 I O Link With FP1 ...
Page 147: ...11 5 11 3 Part Names and Functions ...
Page 159: ...Chapter 12 Appendix 2 I O Link With FP0 ...
Page 164: ...12 6 ...
Page 166: ......
Page 167: ......
Page 168: ...FAF 35E 1 200803 http www mew co jp ac e fasys 2008 ...