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DRST Series Communication Programmer


Communication Programmer for DRST Series | DRST-CM

Communication Programmer for DRST Series


1 year warranty CE
  • Programming Display for DRST Series
  • Modbus Protocol Interface Over RS485
  • Monitor Process Value From the Built-In Display
  • High 2.5 kV Isolation to Host Unit
  • Shielded RJ45 Connector on Top
USB-, RS232-, RS485- og Ethernet-systemer til datafangst - Vis relaterede produkter


• The DRST-CM detachable display adds Modbus RTU RS-485 serial communications to all current and future DRST Series units.
• The unit converts a wide array of sensors and analog device signals measured by the system like uni- and bipolar mA and voltage signals, potentiometer, Lin. R, RTD and TC, to a Modbus communication line signal.
• All individual unit operating parameters can easily and quickly be configured by using the Modbus communication or by using the front display menu.
• The easily readable DRST-CM display can be used to read the process signal, simulate the output signal, indicate sensor errors and internal device errors.

Technical Characteristics
• DRST-CM has full DRSL-Display functionality for unit programming, process signal monitoring and diagnostics handling.
• Modbus RTU protocol is supported using a serial RS-485 communication wiring.
• Multi-drop half-duplex connection via shielded RJ45 connector.
• High safe galvanic isolation of 2.5 kVAC between the serial wiring and the connected system DRST units.
• Modbus parameters such as address, baud rate, stop bit(s), and parity bit are configured from the DRST-CM display, which also stores parameters.

• Mounting in Zone 2 / Div 2. This DRST-CM can be moved from one device to another. The individual system DRST unit configuration of the first device can be saved and downloaded to subsequent devices.
• Programmed parameters can be protected by a user defined password.
• When mounted on devices that are installed upside down, a menu item allows the display on DRST-CM to be rotated 180o and the up/down buttons to switch function.

Environmental Conditions
Operating Temperature: -20 to 60°C
Storage Temperature: -20 to 85°C
Relative Humidity: < 95% RH (non-cond.)
Protection Degree: IP20
Installation In: Pollution degree 2 and measurement/overvoltage cat. II
Mechanical Specifications
Dimensions (HxWxD): 73.2 x 23.3 x 26.5 mm
Dimensions (HxWxD) w/4000/9000 Unit: 109 x 23.5 x 131 mm
Weight Approx: 100 g
Connection: RJ45 - shielded
Common Specifications
Max. Required Power: = 0.15 W
Isolation Voltage
Isolation Voltage, Test/Working: 2.5 kVac/250 Vac reinforced isolation
Response Time
Response Time: < 20 ms
Signal/Noise Ratio: > 60 dB
Update Rate: > 50 Hz
Extended EMC Immunity: NAMUR NE21, A Criterion, Burst: No loss of communication
Signal Type: RS485 half duplex
Serial Protocol: Modbus RTU
Modbus Mode: RTU - slave
Devices on an RS485 Line:Up to 32 (without a repeater)
Data Rates, Baud: 2400, 4800, 9600, 19200, 38400, 57600, 115200
Automatic Baudrate Detection: Yes - can be configured ON or OFF
Parity: Even, Odd, None
Stop Bit(s): 1 or 2
Digital Addressing: 1 to 247
Response Delay:0 to 1000 ms
Observed Authority Requirements
EMC: 2014/30/EU
LVD: 2014/35/EU
EAC TR-CU 020/2011
DNV-GL Marine: Stand. f. Certific. No. 2.4
ATEX 2014/34/EU: DEKRA 13ATEX0098 X
IECEx: DEK 13.0026 X
FM: 0003049132-C
UL: UL 61010-1
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DRST Series Communication Programmer
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