YASKAWA Z1000U Technical Manual page 10

Table of Contents
Analog Input Objects ....................................................................................................................... 340
Analog Output Objects .................................................................................................................... 340
Analog Value Objects...................................................................................................................... 340
Binary Input Objects ........................................................................................................................ 341
Binary Output Objects ..................................................................................................................... 342
Binary Value Objects....................................................................................................................... 342
Device Object .................................................................................................................................. 344
C.7 Accessing Bypass Parameters and the Enter Command .............................................346
Reading Bypass Parameters........................................................................................................... 346
Writing Bypass Parameters............................................................................................................. 346
Enter Command .............................................................................................................................. 346
C.8 Communication Errors .....................................................................................................347
C.9 BACnet Protocol Implementation Conformance Statement..........................................348
D. MEMOBUS/MODBUS COMMUNICATIONS........................................................ 351
D.1 MEMOBUS/Modbus Configuration ..................................................................................352
D.2 Communication Specifications ........................................................................................353
D.3 Connecting to a Network ..................................................................................................354
Network Cable Connection.............................................................................................................. 354
Wiring Diagram for Multiple Connections ........................................................................................ 355
Network Termination ....................................................................................................................... 355
D.4 MEMOBUS/Modbus Setup Parameters ...........................................................................356
MEMOBUS/Modbus Serial Communication.................................................................................... 356
D.5 Bypass Operations by MEMOBUS/Modbus ....................................................................358
Observing the Bypass Operation .................................................................................................... 358
D.6 Communications Timing...................................................................................................359
Command Messages from Master to Bypass ................................................................................. 359
Response Messages from Bypass to Master.................................................................................. 359
D.7 Message Format ................................................................................................................360
Message Content ............................................................................................................................ 360
Slave Address ................................................................................................................................. 360
Function Code ................................................................................................................................. 360
Data................................................................................................................................................. 360
Error Check ..................................................................................................................................... 360
D.8 Message Examples ...........................................................................................................362
Reading Drive MEMOBUS/Modbus Register Contents .................................................................. 362
Loopback Test................................................................................................................................. 362
Writing to Multiple Registers............................................................................................................ 363
D.9 MEMOBUS/Modbus Data Table........................................................................................364
Command Data ............................................................................................................................... 364
Monitor Data.................................................................................................................................... 365
Broadcast Messages....................................................................................................................... 377
Fault Trace Contents....................................................................................................................... 378
Bypass Fault Codes ........................................................................................................................ 380
Alarm Register Contents ................................................................................................................. 380
D.10 Enter Command.................................................................................................................382
Enter Command Behavior ............................................................................................................... 382
D.11 Communication Errors .....................................................................................................383
10 YASKAWA SIEP YAIZ1D 01C Z1000U HVAC MATRIX Drive Bypass Technical Manual