9 GMC-I Messtechnik GmbH
Interfaces
RS 232 serial interface (MBUS/PRG)
Preferred protocol: M-Bus or uploading of firmware updates by means of field utility.
An M-Bus level converter with RS 232 interface is required in order to read out M-Bus compatible
devices in accordance with EN1434-3. Up to 250 devices can be addressed, baud rate can be set to
300, 2400 or 9600 baud, primary or secondary readout (selection).
Prerequisite: M-Bus protocol per EN1434-3, unlimited read-out interval (e.g. every 15 minutes),
devices preprogrammed at the factory with unique addresses.
RS 232 serial interface (FIELD 1)
Actuation of various fieldbus devices which are not equipped with an RS 485 interface.
FIELD 1 and the RS 485 interface are parallel wired.
RS 232 serial interface (FIELD 2)
Connector pin assignments upon request
Ethernet interface
Layout / parameters configuration of the SMARTCONTROL directly via TCP/IP at 10/100 MBit/s.
TCP/IP address via DHCP server or static. Interface for Modbus/TCP protocol (FW).
A public IP address is required for readout via the Internet, and port 2083 must be open or routed to
the SMARTCONTROL (firewall). Internet access must be set up with a flat rate (permanent
connection). Required hardware includes a DSL modem and a router. In the case of a non-static
public IP address, the router must support DynamicDNS service. Use of a VPN channel (virtual private
network) must be made available via separate hardware.
RS 485 interface
Fieldbus interface, distances of up to 1.2 km, connection of devices compatible with the ModBus or
ASCII protocol. Bus termination: internal, 220 Ohm, can be connected with jumper. Up to 32 devices.
Two RS 485/1 RS 485/2 interfaces
(SMARTCONTROL V3 only)
Fieldbus interface, distances of up to 1.2 km, connection of devices compatible with the ModBus or
ASCII protocol. Bus termination: internal, 110 Ohm, can be connected with jumper. Up to 250 devices.
FIELD 1 and the RS 485/1 interface are parallel wired.
FIELD 2 and the RS 485/2 interface are parallel wired.
Optional M-Bus Level Converter
(SMARTCONTROL V3 only)
M-Bus level converter, 80 socket module, article
no. Z301Y
1 slot for an M-Bus level converter module, up to standard loads
