OMX PROFIBUS
DIGITAL TRANSMITTER • RS 485 > PROFIBUS
The transmitter is designed for easy and cost-effective connection of ORBIT MERRET™ instruments to PROFIBUS line with installation to DIN rail. One device can control up to 31 instruments via the RS 485 line with communication protocol OM ASCII.
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RS 485, OM ASCII
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PROFIBUS DP
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galvanic separation: 2,5 kVAC
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width 22 mm
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instalation to DIN rail
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power supply 10…30 V AC/DC or 80…250 V AC/DC
Input
Profibus interface
Input
EIA RS-485
Protocol
PROFIBUS
Rate
9,6 kBaud…12 MBaud
Address
0…125, adjustable in OM devices with the address „00
Data transfer
54B into OM instruments
44B from OM instruments
44B from OM instruments
Modes
data reading + limits setting
value display FLOAT (Real)/LONG
text display
sending OM ASCII instructions
value display FLOAT (Real)/LONG
text display
sending OM ASCII instructions
Number of participants
< 32
< 126 with the use of a repeater
< 126 with the use of a repeater
Transfer status
4x signalization LED
RS 485 interface
Input
RS 485
Protocol
OM ASCII
Format
8 bits + no parity + 1 stop bit
Rate
600…115 200 Baud
Number of OM instruments
< 32
Communication rate
0,1…17 s + communication period according to rate
Cable connection
Cable type
Shielded twisted doubleline
Cable resistance
characteristic resistance 135...165 Ohm
Cable capacity
< 30 pF/m
Cable cross section
> 0,32 mm2
Cable length
1 200 m at baud rate 9.6 / 19.2 / 93.75 kBit/s
1 000 m at baud rate 187.5 kBit/s
400 m at baud rate 500 kBit/s
200 m at baud rate 1 500 kBit/s
100 m at baud rate 3 000/6 000/12 000 kBit/s
1 000 m at baud rate 187.5 kBit/s
400 m at baud rate 500 kBit/s
200 m at baud rate 1 500 kBit/s
100 m at baud rate 3 000/6 000/12 000 kBit/s
Settings
Control
The device is designed for simple measurement without further control
Instrument accuracy and functionality
Watch-dog
reset after 400 ms
Calibration
at 25°C and 40 % r.h.
Power supply
Power supply
10…30 V AC/DC, ±10 %, PF > 0,4, I < 40 A/1 ms, isolated
80…250 V AC/DC, ±10 %, PF > 0,4, I < 40 A/1 ms, isolated
80…250 V AC/DC, ±10 %, PF > 0,4, I < 40 A/1 ms, isolated
Current draw
< 1,5 W/1,5 VA
Mechanical properties
Dimensions
22 x 98 x 113 mm (w x h x d)
Material
PA 66, non-inflammable UL 94 V-I (blue)
Installation
DIN rail, width 35 mm
Operating conditions
Connection
connector terminal board, cable section < 2,5 mm2
Canon 9
Canon 9
Stabilization period
within 5 minutes after switch on
Operating temperature
-20°…60°C
Storage temperature
-20°…80°C
Protection class
IP20
El. safety
EN 61010-1, A2
Dielectric strength
4 kVAC within 1 min. between pow. supply and input
Insulation resistance
| power supply | 600 V (ZI), 300 V (Di)* |
| input, output, PN | 500 V (ZI), 250 V (Di)* |
EMC
EN 61326-1
Images
Dimensions and installation
Connection
Datasheets
| File name | File type | Version | Language | Download |
|---|---|---|---|---|
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Datasheet OMXProfibus
Katalogový list OMXProfibus
|
PDF
|
2026.2 |
|
Download |
|
Datasheet OMXProfibus
Katalogový list OMXProfibus
|
PDF
|
2023.1 |
|
Download |
|
Datasheet OMXProfibus
Datasheet OMXProfibus
Datasheet OMXProfibus
Katalogový list OMXProfibus
|
PDF
|
2020.1 |
|
Download |
User manuals
| File name | File type | Version | Language | Download |
|---|---|---|---|---|
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Operating instructions OMX_Profibus
Návod OMX_Profibus
|
PDF
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2010.1.1 |
|
Download |
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Operating instructions OMX_Profibus
Návod OMX_Profibus
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PDF
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2007.1.0 |
|
Download |