Siemens ESM - Manual (Page 18)

Introduction
Industrial Ethernet OSM/ESM
14 C79000-Z8976-C068-10
Properties of the ESM ITP80
Electrical ports 8 x 10/100 Mbps
autonegotiation/autocrossover ports
ITP connectors (sub-D 9-pin female)
Maximum distance between two ESMs 100 m
Maximum ring span with 50 ESMs 5 km
Digital Inputs 8 x DC 24V
Note
Industrial Ethernet OSM ITP80 is available in two versions:
• ESM ITP80 with eight digital inputs:
The eight digital inputs are connected over two plug-in 6-pin terminal blocks on
the top of the device. To display the status of these inputs using the eight
device LEDs, there is an additional display mode known as the "Input Status"
that is selected using a third mode LED.
• ESM ITP80 without digital inputs:
There are no digital inputs and the "Input Status" display mode is not available.
The operating states are displayed by two mode LEDs.