Chapter 5: DURAPULSE MODBUS Communications
5–42
DL MRX/MWX Communication Program (continued)
(Continued next page)
6
Drive #1 Fault Indication
Reset
X1
7
This rung turns on C1 if there is a fault in drive #1.
()
SET
Drive #1 Fault
C1
()
RST
Drive #1 Fault
C1
5
Drive #2
Run CMD
Write Enable
C42
Drive #2
Direction, Fault, Reset
Write Enable
C41
Drive #2
Speed Ref
Write Enable
C40
This rung checks to see if it is time to communicate to slave 2, and also if there
are no current write requests to that drive. If not, it reads data from slave 2.
MRX
CPU/DCM Slot:
Port Number:
Slave Address:
Function Code:
Start Slave Memory Address:
Start Master Memory Address:
Number of Elements:
Modbus Data type:
Exception Response Buffer:
CPU
K2
K2
03 - Read Holding Registers
K48449
V2020
K15
584/984 Mode
V5003
Port Busy
SP116
CTA2
=
K1
*** The following 21 rungs (6–26) are for slave 1 communications control. ***
V2000
욷
K1
This rung allows a switch on input X1 to reset the C bit used to indicate a drive #1 fault.
8
Drive #1 Overload Indication
Reset
X2
9
This rung turns on C2 if drive #1 has an overload fault.
()
SET
Drive #1 OL
C2
()
RST
Drive #1 OL
C2
V2000
=
K4
This rung allows a switch on input X2 to reset the overload fault bit C2.
DURAPULSE AC Drive User Manual
1st Ed. Rev. D 05/2013
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