Alarm Modem
The Alarm Modem is a malfunction message, data logging and remote maintenance system for your S7-300/400. The Alarm Modem is connected with a S7-300 or S7-400 controller via the MPI-Bus, then it inquires data from the PLC like a programming device. 

ACCON-MPI/PROFIBUS-Modem
With the ACCON-MPI/PROFIBUS-Modem you can connect a PC to the MPI or PROFIBUS interface of a S7 controller for remote maintenance. The connection is effected via a telephone connection.

ACCON-MPI-Modem
With the ACCON-MPI-Modem you can connect a PC to the MPI interface of a S7 controller for remote maintenance. The connection is effected via a telephone connection.

Dial-in router
The dial-in router MoRoS is a compact device placed in a top-hat rail case which suits industrial needs. The device combines the functions of a modem, router and a switch. Thus you can easily establish a low-priced solution for remote maintenance including several Ethernet-capable components. Up to 4 network participants e.g. PLCs or HMI systems can be connected to the integrated switch. Since the beginning of 2008 an extended version has additionally become available. In this version a firewall avoids unauthorized network access. OpenVPN is continued to be used to establish an encrypted and safe connection over the insecure internet.

Dial-In Router Pro LAN/DSL
The dial-in router Pro LAN/DSL is a dial-in router placed in a top-hat rail which suits industrial needs. Together with a DSL modem of the respective internet service provider it can be used to connect a network or a PLC to the internet for the purpose of remote maintenance. It connects a control network to a company network without using an additional modem, with the control network either being a PROFINET network or an Industrial Ethernet network.

Industrial modem
For the remote maintenance of a S7 controller you need a TeleService adaptor and a suitable modem. The industrial modem is perfectly suited for this due to its compact design and the easy installation on DIN top hat rails.