8-8
8.2.7 A Transmission Error has Occurred through RS485
Procedure 1
Check to make sure the transmission cables have been securely connected between the two (+)
terminals and two (
−
) terminals of the units, and that the final unit has been correctly connected.
Procedure 2
Check if the transmission cables are within the specifications range. At this point, make sure all of the
cables in the link are of the same type, and that multiple types of cables are not being used.
•
Do not designate any unit other than those at both ends of the network as a terminal station.
Reference:
For the specifications range of the transmission cables, refer to <7.3.3 Selection of Transmission
Cables>.
Procedure 3
Check that link areas do not overlap.
8.2.8 No Communication is Available through RS232C
Condition: No communciation with 1-channel type RS232C cassette
Procedure 1
Check if the CS signal is on.
When the “COM.2 R” of the communication cassette LED does not light, the CS signal is not on.
If the three-wire type is used, connect the RS signal and the CS signal of the communication cassette,
and turn the CS signal on.
Reference:
<7.1.2 Types of Communication Cassette>
Summary of Contents for FP E Series
Page 1: ......
Page 16: ......
Page 17: ...Chapter 1 Functions and Restrictions of the Unit ...
Page 28: ...1 12 ...
Page 29: ...Chapter 2 Specifications and Functions of the Unit ...
Page 37: ...2 9 Circuit diagram C32 Y0 Y1 Y3 Y4 C28 Y0 Y1 Y3 Y4 Y2 Y5 to YF Y2 Y5 to YB ...
Page 48: ...2 20 ...
Page 49: ...Chapter 3 Expansion ...
Page 56: ...3 8 Terminal layout diagram Note The numbers in the connector are for the first expansion ...
Page 61: ...Chapter 4 I O Allocation ...
Page 66: ...4 6 ...
Page 67: ...Chapter 5 Installation and Wiring ...
Page 90: ...5 24 ...
Page 91: ...Chapter 6 High speed counter Pulse Output and PWM Output functions ...
Page 116: ...6 26 ...
Page 121: ...6 31 ...
Page 125: ...6 35 Pulse output diagram ...
Page 131: ...6 41 ...
Page 139: ...6 49 ...
Page 141: ...6 51 ...
Page 144: ...6 54 Program Continued on the next page ...
Page 145: ...6 55 ...
Page 147: ...6 57 Program ...
Page 151: ...Chapter 7 Communication Cassette ...
Page 210: ...7 60 The values of DT50 and DT51 are written in DT0 and 1 of PLC ...
Page 238: ...7 88 ...
Page 239: ...Chapter 8 Self Diagnostic and Troubleshooting ...
Page 247: ......
Page 248: ......
Page 249: ...Chapter 9 Precautions During Programming ...
Page 260: ...9 12 Example 2 Using the CT instruction between JP and LBL instructions ...
Page 268: ...9 20 ...
Page 269: ...Chapter10 Specifications ...
Page 286: ......
Page 287: ...Chapter 11 Dimensions ...
Page 290: ...11 4 11 1 3 Expansion Unit FPG XY64D2T FPG XY64D2P FPG EM1 ...
Page 293: ...Chapter 12 Appendix ...
Page 297: ...12 5 ...
Page 437: ...12 145 12 7 ASCII Codes ...
Page 439: ......
Page 440: ......