Rev 20.11.2019
V1.07 - Page 5
Subject to modifications!
romutec Steuer.-und Regelsysteme GmbH Jochsberger Straße 39 D-91592 Buch am Wald
www.romutec.de
Subject to technical changes
3 System description
The
romod-eco
module family is a set of
romutec®
remote controlled Input-/Output-devices (remote I/Os)
for mounting on DIN rails. It consists of various types of I/O modules. The connection to the MODBus
master device is done via a RS485 connection. The communication takes place via MODBus RTU.
Each module has its own RS485 bus interface, therefore no gateway module is required. The address is
set by means of an 8-pole dip switch. The available range of addresses is 0 ... 254.
The remote I/O devices operate as slave modules with any MODBus master.
The system can be used at all RS485 ports. The baud rate of the protocol will be automatically detected
when receiving several telegrams.
As expansion modules the following types are available:
Digital input modules 16 DI eco, activation of the inputs conventionally wired via terminal and
passing over the bus to the MODBus master device for further processing.
Digital output modules 8 DO eco with ground referenced semiconductor outputs +24 V DC,
activation of outputs by commands via MODBus.
Digital output modules 8 DO-R eco with potential-free relay outputs (two groups with four relays
each), activation of outputs by commands via MODBus.
Digital input/output modules 4 DIO-R eco with four digital inputs and four potential-free relay
outputs (normally open contacts), activation of outputs by commands via MODBus.
Digital output modules 4 DO-R eco containing four bistable relay outputs (normally open contacts),
activation of outputs by commands via MODBus.
Analog input modules 8 AI eco, input signals conventionally wired via terminals and passing over
the bus to the MODBus master for further processing. Configurable sensor inputs (0 .. 10 V and
various RTD).
Analog output modules 8 AO eco, setting the output values by commands via MODBus.
