Omron 3G3MV-PDRT2, User Manual

Page: 132 / 363

Chapter 6
6-2
Message Communications
6-1 Overview of Message Communications
■
Message Communications Operations
Message communications enable data to be exchanged as required between nodes (i.e., between
Masters or between Masters and Slaves) on a DeviceNet Network. For example, the accumulated
data from a given PLC can be read from another PLC, and constants from various Slaves can be
changed from a PLC. To use message communications, however, both nodes involved in the data
exchange must support message communications.
Note When the DeviceNet Communications Unit/Card is used, the RS-422/RS-485 of the Inverter
cannot be used for communications.
■ Types of Message Communications
DeviceNet message communications are broadly divided into the two categories described below. Of
these two categories, the Inverter's DeviceNet Communications Unit/Card supports explicit mes-
sages.
• Explicit Messages
Explicit messages are defined by DeviceNet. The class, instance, and attribute are specified for
executing message communications. The messages are the same for all Inverter products, so
messages can be exchanged in the same way with masters made by other manufacturers.
• FINS Messages
Messages can be exchanged using FINS commands between DeviceNet nodes (Masters and
Slaves) that support FINS messages. (FINS commands are actually sent and received using
DeviceNet explicit messages.)
Note Message communications are supported by CV-series, CS/CJ-series, and C200HX/HG/HE
PLCs, but not by C200HS PLCs.
CMND (490)
RUN
STOP
RESET
FREF FOUT
IOUT MNTR
F/R
LO/RE PRGM
DIGITAL OPE
RATOR
DIGITAL OPERATOR
PJVOP-140
PJVOP-140
RUN
ALARM
200V 3P
HASE
200V 3PHASE
0.1kW 0.1kW
NPIT31297
-404-1
NPIT31297-404-1
FREQUENCY FREQUENCY MAX MAX
MIN MIN
AVERTISSMENT
-
electrique. '
Risque de decharge
Lisez man
uel avant d
'installer.
Pour repo
ndre aux e
xigences
, s'assure
r que~
le neutre
est a la m
asse pou
r la serie
400V.
'
'
'
Attendez 1
minute a
pres d'eta
chment d
'electricite
,
juscequ'a
les conde
nsateurs s
ont decha
rges.
'
'
'
'
'
'
'
-
WARNING
- Risk of e
lectric sho
ck.
Read man
ual before
installing.
Wait 1 min
ute for cap
acitor disc
harge afte
r
disconnec
ting powe
r supply.
To confo
rm to re
quiremen
ts, make s
ure
to ground
the supp
ly neutra
l for 400V
class.
SYSDRIV
E
3G3MV IN
VERTER
INVERTER
MADE IN JAPAN
IP20 OMRON Corporation
3G3MVÐA2001
INPUT:
OUTPUT: LOT NO: SER NO:
FILE NO:
AC3PH 200 Ð 230V 50/60Hz 1.1A
AC3PH 0 Ð 230V 0 Ð 400Hz 0.8A 0.3kVA
8Y1 MASS:0.6kg N810318 Ð 001A Ð 3 PRG:
E179149 INSTALLATION CATEGORY
DeviceNet Master Unit
CS1W-DRM21(-V1)
CJ1W-DRM21
Message communications function
Reading Inverter
output current
3G3MV, 3G3RV, or
3G3FV Inverter
3G3MV-PDRT2 DeviceNet
Communications Unit (for 3G3MV Inverters)
3G3RV-PDRT2 DeviceNet Communications
Card (for 3G3RV/3G3FV Inverters)
Note: T-branch wiring using Thin Cables