VELMEX VXM-3 - Linking Vxms for 3 & 4 Motors

TwocontrolslinkedtogetherbytheVXMbusmakeitpossibletorun3or4motorswith
allprogramsresidinginoneVXM,andallcommunicationfromahostwiththisoneVXM.
(Input4.)
TheVXMbusisaserialbusconformingtotheICspecification. Thisbusisusedto
transferdatabackandforthbetweentwoVXMcontrolsthatareconfiguredasMaster
andSlave.
UseonlyaVelmexapprovedcableforthebusconnection,telephonehandsetcables
willnotwork.Telephonecablesreversethe1and4connection,astraightthroughcable
isrequired.
Buscablesshouldbe
shortandnotbenearothercablesorelectronicdevices.
BydefaultallVXMsareSlaves.
TolinkVXMs,onecontrolshouldbesettobeaMaster(seeControlModeFRPPDQG
"
setDM"intheAppendixO.) TheVelmexCOSMOSprogramwillconfiguretheVXMs
forMaster/Slaveoperation.
AdesignatedMasterwill
attempttoestablishcommunicationstoaSlaveonpower-up.
IftheMastercannotfindtheSlaveitwilltryagainwhenitisrequiredtosendamotor3
ItisnormalfortheSlavenottoflashitspowerlight(greenLED)
atpower-up.
Abuserrorwilloccur(”ËB”
senttohostandVXMresets)iftheMastercannotfindthe
Slave,eitherbecausethereisnotoneconnected,oritisnotpowered.
TheMasteristheVXMthatrunsmotors1and 2,communicateswithahost,andcan
bestartedwiththeRuninputandstoppedwith
theStopinput
TheSlaverunsmotors3and4(TheMasterassignsmotors3and4tomotors1and2
ontheSlave) andreceivesallcommandsovertheVXMbusfromtheMaster.
· TheMasterdisablestheRun,Stop,andRS-232inputsontheSlave.
2
Considerations when linking VXM controls together:
or4command. NOTE:
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·
·
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·
·
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Linking VXMs for 3 & 4 Motors (VXM-3,4)
10
+
+
+
+
VX M
Stepping
SteppingMotor
Motor
Controller
Controller
www.velmex.com
Bus
Bus
VXM
VXM
Stop
Run
Run
On-Line
On-Line
Local
Local
- -
+ +
Jog 1
Jog 2
+
+
+
+
VX M
Stepping
SteppingMotor
Motor
Controller
Controller
www
www
.velmex.com
.velmex.com
Bus
Bus
VXM
VXM
Stop
Run
On-Line
Local
- -
+ +
Jog 1
Jog 1
Jog 2
Jog 2
M2
M4
M1
M3
L2
L1
L4
L3
Master Slave
VXMBusCable
Part#4-2122
$*.3
Index Motor 3 Example
Graphic Representation: ®
start end
¬Clearpreviousentries,IndexMotor3 +400steps
NOTE: SlaveRS-232portisnotused