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6.1.
IO-Link
The static group GRM (-H) is equipped with IO-Link
communication.
IO-Link is a bidirectional communication protocol
compliant with the IEC 61131-9 standard.
Bothe power and digital communication are in the
same cable and connector.
Digital communication allows data transfer between
the Device (the static group GRM) and the Master to
which the device is connected. The data are:
• Process Data, such as power to be supplied,
current/voltage/power/impedance of the load and
alarm status
• Acyclic data, such as settings, statistical and
diagnostic data
6.2.
IO-LINK INSTALLATION AND ELECTRICAL CONNECTIONS
6.2.1.
Electrical installation
The static group must be grounded (normally through
the machine body or equipment on which it is
installed).
The GRM static group has a push-in connector. 3
of the poles present are strictly dedicated to the
connection with an IO-Link master:
• CQ (IO-Link / Out) = digital communication pin or
digital output (IO-Link or SIO mode)
• L + = Power supply + (rated 24 Vdc)
• L- = Power supply - (0 Vdc)
• 2 poles are instead dedicated to a PNP type digital
alarm output. This can be intercepted by the IO-Link
master itself (if digital inputs are made available),
or by other devices (for example the alarm could be
Notes:
Connect the device to a standard IO-Link master via a standard unshielded cable (max length 20 m according
to IO-Link specifications).
6.
IO-LINK
The IO-Link standard requires the use of a description
file called IODD (IO Device Description).
This file allows the correct identification of the device
and the interpretation of the data sent and exchanged
with the master. Please consult the Gefran website to
download the IODD files.
intercepted directly by PLC).
• DQ = Digital output normally off (configurable with
normally on)
PNP type, output voltage: Us(24Vdc)-0.7Vdc, Iout
max =15mA (see "5.2. Alarms" on page 35 and
"5.3. Inputs/Outputs" on page 47)
• L- = Power supply - (0 Vdc) (common to pin 3)
Push-in connector
IO-Link Output
819XX_MAN_GRM-H_11-2022_ENG_pag. 76
17
DQ
16
L-
15
CQ (IO-Link
13
/ Out)
12
L+
11
L-
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