WAGO 750-404 Manual page 14

14 • 750-404 [Up/Down Counter /100 kHz]
Description
The counter can be set or reset with the control byte.
The digital outputs DO 1 and DO 2 of the counter module 750-404 and the
variation 750-404/000-002 are activated through bits in the control byte.
The digital outputs DO 1 and DO 2 of the counter module 750-404/000-004
are activated depending on the counter reading or through bits in the control
byte.
The outputs are short-circuit-protected.
The high states of the inputs U/D and CLOCK and the digital output channels
are each indicated by a green LED.
An optocoupler is used for electrical isolation between the bus and the field
side.
Any configuration of the counter modules is possible when designing the
fieldbus node. Grouping of module types is not necessary.
The field side supply voltage of 24 V for the counter module is derived from
adjacent I/O modules or from a supply module. The supply voltage for the
field side is made automatically through the individual I/O modules by means
of power jumper contacts.
Warning
The maximum current of the internal power jumper contacts is 10 A. When
configuring the system it is important not to exceed the maximum/sum
current. However, if such a case should occur, another supply module must
be added.
Attention
This module has no power contacts for receiving and transmitting the ground
(earth) potential. A supply module is required, if the adjacent modules need
to be connected to the ground.
Note
Use an appropriate supply module (e.g. 750-602) if an electrically isolated
voltage supply is required!
The module 750-404 and the variations 750-404/000-002 and 750-404/000-
004 can be used with all couplers/controllers of the WAGO-I/O-SYSTEM 750
(except for the economy types 750-320, 750-323, 750-324 and 750-327 and
the ModBus controllers 750-812, 750-812/025-000 and 750-814).
WAGO-I/O-SYSTEM 750
I/O Modules