Ladder Program - Omron SYSDRIVE 3G3MV SERIES User Manual

Communications
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The length is set in the length box. Insert the length by using the Insert icon. The length is the number of
bytes of the succeeding data (W(1N + 1), 2). The length is automatically set by the CX-Protocol.
(W(1N + 1), 2)
The Inverter's actual data is to be sent. This example selects Variable and Read R() and sets the oper-
and. Set Data to 1N + 1 because the RUN command data uses four bytes each from D + 3, D + 6, and D +
9.
Set Edit Length to 0N + 2 so that it will be set to two bytes.

7-9-5 Ladder Program

• Transfer the created protocol to the Communications Board.
• The following example describes how to control the Inverter with this protocol.
• Before using this program in your system, be sure to check the word and data memory allocations and
change them if necessary so that there will be no word or data memory duplication.
• This program will stop all communications if a communications error or fault occurs. Be sure to set
n151 for communications time-over detection selection to 0 through 2 so that the system will stop with
time-over detection.
H Memory Allocations
D Starting Communications and Status Signals
Word
00000
00001
00002
D Inverter Control Input (Register 0001 RUN Command)
Word Slave 1 function
00100 RUN command
00101 Forward/Reverse
00102 External fault
00103 Fault reset
00104 Multi-function input 1
00105 Multi-function input 2
00106 Multi-function input 3
00107 Multi-function input 4
00108 Multi-function input 5
00109 Multi-function input 6
00110 Multi-function input 7
00111 Always set to 0.
00112 Always set to 0.
00113 Always set to 0.
00114 Always set to 0.
00115 Always set to 0.
Functions common to all Slaves
Inverter control communications (continued when set to ON)
Communications error output (on hold when a communications error or fault
occurs)
Communications fault reset
Word
00200 RUN command
00201 Forward/Reverse
00202 External fault
00203 Fault reset
00204 Multi-function input 1
00205 Multi-function input 2
00206 Multi-function input 3
00207 Multi-function input 4
00208 Multi-function input 5
00209 Multi-function input 6
00210 Multi-function input 7
00211 Always set to 0.
00212 Always set to 0.
00213 Always set to 0.
00214 Always set to 0.
00215 Always set to 0.
Slave 2 function
00300
00301
00302
00303
00304
00305
00306
00307
00308
00309
00310
00311
00312
00313
00314
00315
Chapter 7
Word Slave 3 function
RUN command
Forward/Reverse
External fault
Fault reset
Multi-function input 1
Multi-function input 2
Multi-function input 3
Multi-function input 4
Multi-function input 5
Multi-function input 6
Multi-function input 7
Always set to 0.
Always set to 0.
Always set to 0.
Always set to 0.
Always set to 0.
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