YOKOGAWA CW120 - Page 10

8
IM CW120-E
Contents
Chapter 9. Electric Energy Measurement ...........................................................9-1
9.1 Measuring Electric Energy .......................................................................... 9-1
9.2 Starting and Stopping Integration ................................................................ 9-3
9.3 Switching Display Contents ....................................................................... 9-10
9.4 Saving Data ............................................................................................... 9-12
9.5 Backup Memory ........................................................................................ 9-15
9.6 External Control Input/Output .................................................................... 9-18
9.7 Meter Actions upon Power Failure and Recovery ..................................... 9-21
Chapter 10. PC Card ...........................................................................................10-1
10.1 PC Card Specifications ............................................................................. 10-1
10.2 Inserting and Removing PC Card.............................................................. 10-2
10.3 Storage Capacity ....................................................................................... 10-3
10.4 Formatting PC Card .................................................................................. 10-4
10.5 Saving and Loading from/to PC Card........................................................ 10-5
10.6 Interface with Personal Computer ............................................................. 10-7
Chapter 11 Communication Functions ............................................................ 11-1
11.1 RS-232 ...................................................................................................... 11-1
11.2 RS-485 ...................................................................................................... 11-6
11.3 Data Format .............................................................................................. 11-9
Chapter 12. Auxiliary Functions ........................................................................12-1
12.1 Convenient Functions................................................................................ 12-1
12.2 Using Optional Printer ............................................................................... 12-3
Chapter 13. Troubleshooting .............................................................................13-1
13.1 Corrective Measures in Case of Failure .................................................... 13-1
13.2 Error Codes ............................................................................................... 13-2
Chapter 14. Specifications .................................................................................14-1
14.1 Specifications of CW120/121 .................................................................... 14-1
14.2 Specifications of Clamp-on Current Probes .............................................. 14-8
Appendix 1. Circuit Block Diagram ..............................................................App1-1
Appendix 2. Communication Commands ....................................................App2-1
1. Commands ......................................................................................... App2-2
1.1 Messages .............................................................................................. App2-2
1.2 Commands ............................................................................................ App2-4
1.3 Response .............................................................................................. App2-5
1.4 Data ....................................................................................................... App2-6
1.5 Messages on RS-485 ............................................................................ App2-8
1.6 Communication Commands .................................................................. App2-9
Output Queue and Error Queue .......................................................... App2-12
1.7 Detailed Description of Communication Commands ........................... App2-12
1.7.1 COMMunicate Group ...............................................................App2-12
1.7.2 SYSTem Group ........................................................................ App2-13
1.7.3 INTEgrate Group...................................................................... App2-15
1.7.4 MEASure Group....................................................................... App2-17