Festo CTEU-DN, Description, Functions And Maintenance, Page: 18 / 130

1. Introduction
1-4
Festo P.BE-CTEU-DN-OP+MAINT-EN en 1206NH
1.1.2 I-port interface
I-port is a Festo-specific interface for transmitting communic-
ation data (process data, sensor signals, pilot signals) and
supply voltages.
The I-port communication protocol is based on the IO link
protocol. The electrical and mechanical link between bus
nodes and I-port device is standardised.
The bus node has separate operating and load voltage sup-
plies. It also supplies voltage to the devices connected via the
I-port interface.
Located at the bottom of the bus node is the I-port interface
for connection to an I-port-compatible device, e.g. valve ter-
minal or decentralised electrical connection box.