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SS10018 – 8ch mV – Tc Modbus RS-485 IO Module

The SS10018 converts up to 8 analogue input signals, transmitted with MODBUS RTU/ASCII protocol over the RS-485 network.

SKU SS10018 Category

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8ch mV – Tc Modbus RS-485 IO Module, SS10018 from Sielco Sistemi.

The SS10018 converts up to 8 analogue input signals, transmitted with MODBUS RTU/ASCII protocol over the RS-485 network.

You can connect 8 voltage signals up to ± 250 mV or thermocouples sensor type B, E, K, J, N, R, S, T. By programming, you are able to scale the input measurement up to ± 32768 points.

The device has many features. Firstly, it guarantees you high accuracy and stable measurement versus time and temperature. A Watch-Dog timer alarm is also provided to ensure plant safety. Additionally, the isolation between  parts of the circuit removes eventual ground-loop effects. This allows you to use the device in heavy environmental conditions. In addition, the device is housed in a 6 module DIN rough self-extinguishing plastic box, allowing you to mount on EN-50022 standard DIN rail.

The SS10018 is designed to work with the MODBUS RTU/ASCII protocol, a standard protocol in field-bus. This allows you to directly interface SS10000 series devices to many of the PLCs and SCADA applications available on the market.

Product Features

  • Modbus Slave device on RS-485
  • Modbus RTU/ Modbus ASCII protocol
  • 8 input channels for voltage up to ± 250 mV and thermocouples sensor type B, E, K, J, N, R, S, T
  • Communication parameters configurable by dip-switches
  • Watch-Dog Alarm
  • Remotely Configurable
  • 1500 Vac 3-ways Galvanic Isolation
  • LED signalling on front side for power supply and communication
  • Connection by removable screw terminals
  • High Accuracy
  • CE mark
  • DIN rail mounting in compliance with EN-50022

For more information and protocol instructions, please see the Product specifications sheet and user manual. 

Typical @ 25°C and in the nominal conditions

Voltage Input 50mV: -50 to +50 mV 
100mV: -100 to + 100 mV
250mV: -250 to +250 mV
Thermocouple J: -210 to +1200 °C
K: -210 to +1372 °C
R: -50 to +1767 °C
S: -50 to +1767°C
B: +400 to +1825 °C
E: -210 to +1000 °C
T: -210 to +400 °C
N: -210 to +1300 °C
Input Calibration mV,Tc: ±0.05 % f.s. or 5µV (whichever greater)
Linearity mV ±0.1 % f.s.
Tc ±0.2 % f.s.
Cold Junction Compensation ±1 °C
Input Impedance mV,Tc >1 MΩ 
Thermal Drift ±0.005 % / °C f.s.
CJC Thermal Drift ±0.02 °C/ °C f.s.
Line resistance influence mv,Tc <0.8µV/Ω f.s.
Sample Time 0.5 to 1 sec
Data Transmission Baud Rate: 115.2 Kbps 
Max Distance: 1.2 Km - 4000 ft
Power Supply Voltage 10 to 30 Vdc
Power Supply Current Consumption (operative) 35 mA ma@ 24 Vdc
45 mA max@ 10 Vdc 
Power Supply Polarity Inversion Protection 60 Vdc max
Isolation Between All Ways: 1500 Vac 50 Hz, 1 Min.
Operating Temperature -10 to +60 °C
Storage Temperature -40 to +85 °C
Humidity (non condensing) 0 to 90 %
Maximum Altitude 2000 m
Housing Material Self-extinguishing plastic
IP Code IP20
Wiring Wires with diameter 0.8 to 2.1 mm² (AWG 14-18)
Tightening Torque 0.5 N m
Mounting EN-50022 DIN rail
Weight ∼ 200 g
EMC EN 61000-6-2
EN 61000-6-4
IOlog SS10018 Specifications IOlog SS10018 Specifications

IOlog SS10018 User Guide IOlog SS10018 User Guide

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