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Other HFU Functions Section 5-2
5-2 Other HFU Functions
5-2-1 Auxiliary Output Allocations
The parameters that can be set for auxiliary outputs 1 to 4 are outlined below.
The settable parameters include those for all channels and those for individual
channels.
Note (1) This parameter can be set only when operation is stopped.
When this parameter has been changed, the new setting becomes effec-
tive the next time a software reset is performed for the Unit or the next
time power is turned ON.
(2) Refer to Parameter List on page 193 for details on parameter settings.
5-2-2 HFU Internal Buses
The EJ1 has three internal device buses. I/O allocations can be made for
these buses, which enables simple sequencing to be incorporated by allocat-
ing output signals to buses (bus output assignments) and determining opera-
tions based on bus status (bus input assignments).
Note Bus inputs cannot be used if a Basic Unit is used without an HFU.
Even if an HFU is used, bus inputs cannot be used for Basic Units connected
to the RS-485 communications lines using distributed positioning.
Temperature
Controller Error
The Temperature Controller Error output will turn ON when any
bit between bit 0 and bit 13 is ON in the Device A Status. It can
be used to output EJ1 error status.
Refer to Status Lists on page 209 for details on Device A Sta-
tus.
Event inputs 1 to 4 Output the ON/OFF status of event inputs 1 to 4.
Bus inputs 1 to 3 Output the ON/OFF status of bus inputs 1 to 3.
Variable type Parameter name Setting range Default
F2/B2 Auxiliary Output 1 Assignment (Common) 0 to 22 20
Auxiliary Output 2 Assignment (Common) 0 to 22 21
Auxiliary Output 3 Assignment (Common) 0 to 22 22
Auxiliary Output 4 Assignment (Common) 0 to 22 0
Conditions for use No special conditions
SUB2, SUB3, and SUB4 can be set in the same way.
Temperature Controller Error
Event inputs 1 to 4
Disabled
Settable
parameters
SUB1 SUB2 SUB3 SUB4
Bus inputs 1 to 3
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