Vega VEGAPULS C 23 - Modbus - Overview

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14 Supplement
VEGAPULS C 23 • Modbus and Levelmaster protocol
58349-EN-200806
Eectiverangetyp.
13)
25 m (82 ft)
Adjustment
PC/Notebook PACTware/DTM
Smartphone/Tablet Adjustment app
Voltage supply
Operating voltage
8 … 30 V DC
Power consumption without/with bus communication typ. at
Ʋ 12 DC 150 mW/330 mW
Ʋ 24 V DC 240 mW/420 mW
Reverse voltage protection Integrated
Overvoltage protection
Dielectric strength against metallic
mounting parts
> 10 kV
Overvoltage resistance (test impulse
voltages1.2/50µsat42Ω)
> 1000 V
Additional overvoltage arrester Duetotheoatingstructureoftheelectronicsandcom-
prehensive insulation measures generally not necessary.
Electrical protective measures
Potential separation
Electronics potential free up to 500 V AC
Protection rating IP66/IP68 (3 bar, 24 h) acc. to IEC 60529,
Type 6P acc. to UL 50
Altitude above sea level 5000 m (16404 ft)
Protection class III
Pollution degree 4
14.2 Modbus – Overview
Modbusisabussystemforconnectingahost(e.g.PLC)andseveralslaves(e.g.elddevices).
DatatransmissionviatheModbuscommunicationprotocoltakesplaceindierentoperating
modes:
•
Modbus ASCII (data transmission as ASCII signs)
•
Modbus RTU (data transmission is binary signs)
A version of the Modbus protocol is the Levelmaster protocol.
Thedataexchangebetweenelddeviceandhostisdoneviaregisters.Theinputregistersonlyal-
low read access, holding registers both read and write access.
Thedevicesupportstheabovementionedpoints.Thefollowingshowsthedevice-specicdetails
required for this.
YoucanndfurtherinformationtoModbusonwww.modbus.org.
13)
Depending on the local conditions