Installation and Wiring
Limit to the Number of GX/GP Main Unit Modules
• When GX90XA-04-H0 and GX90YA are included
GX10 GP10 GX20-1 GP20-1 GX20-2 GP20-2
No limit No limit* 9 9 9 9
* Up to two modules for 12 V DC models (power supply
suffix code: 2)
• When GX90UT is included
GX10 GP10 GX20-1 GP20-1 GX20-2 GP20-2
No limit No limit* 8 8 8 8
* Up to two modules for 12 V DC models (power supply
suffix code: 2)
Limit on Modules
• Up to 10 modules consisting of GX90YD, GX90WD,
and GX90UT can be installed into the system.
• One GX90WD module can be installed in a GX. One
module can be installed in a GX60 (expandable I/O)
and each GM sub unit.
• One GX90YA module can be installed in a GX10. Two
modules can be installed in each of the GX20, GX60
(expandable I/O) and GM sub unit.
• Up to 10 GX90YA modules can be installed in a GX10/
GX20-1 system and up to 12 in a GX20-2 system.
• If the measurement mode is High speed, only
GX90XA-04-H0 (high-speed AI), GX90XD (DI), and
GX90WD (DIO) are detected. DI and DIO are fixed
to remote mode. Measurement and recording are not
possible.
• If the measurement mode is Dual interval, GX90UT is
not detected.
Notes on Module Installation
• When the reference junction compensation of this
product is used with the thermocouple input of a
GX90XA-10-U2, GX90XA-10-L1, GX90XA-10-T1 or
GX90XA-04-H0, if the following module is installed to
the right (slot with the smaller number) of the GX90XA
module as seen from the GX rear panel, the reference
junction compensation accuracy of that module may
deviate from the guaranteed range (except when
GX90XA-04-H0 is installed to adjacent slots).
GX90XA-10-C1, GX90XA-04-H0, GX90WD, GX90YA,
GX90UT
• On the GX20, when the reference junction
compensation of this product is used with the
thermocouple input of a GX90XA-10-U2, GX90XA-
10-L1, GX90XA-10-T1, or GX90XA-04-H0, if the
following module is installed above, below, to the
right, or to the left (slot with the smaller number) of
the GX90XA module as seen from the GX rear panel,
the reference junction compensation accuracy of that
module may deviate from the guaranteed range.
GX90YA, GX90UT
Channel Names
A channel name consists of a unit number, slot number,
and channel number.
GX10/GP10
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