Omron E5ZD, Руководство по эксплуатации

Страница: 115 / 157

105
able, a header code of IC will be returned without an end code (see Section 4-1-2
End Codes for the IC header code response format).
@ 0 Unit R U 0 0 0 0 CR
Header code Always 0.
FCS
*
Terminator
End code
Setting
code
7 6 5 4 3 2 1 0
Point 0 setting
Point 1 setting
Point 2 setting
Point 3 setting
Point 4 setting
Point 5 setting
Point 6 setting
Point 7 setting
Bit No.
Bit status, meaning, and conversion methods are the same as those used to set
the HB and HS alarm points. Refer to
Alarm Point Write for details.
Response Examples This response shows that HB and HS alarms on Unit 2 have been set for control
points 0, 2, and 4 and canceled for control points 1, 3, and 5.
*
@ 0 0 R U 0 0 0 0 2 A 3 4 CR
End Codes If an end code of 00 was returned in the response, the command was executed
normally. If the end code is not 00, the desired data will not have been read. An
end code of 01 will be generated if this command is executed for a model without
the heater burnout detection function. Refer to
Section 4-1-2 End Codes for a
description of the other possible end codes and their meanings.
4-2-28 Detection Level Write: WW
This command is used to set the current value that will trigger the HB alarm. The
trigger current level for all alarms is set to 0.0 A for all control points (canceling
the HB alarm) at the factory and needs to be reset in order for the alarms to oper-
ate. (The alarm functions are only available on models equipped with the heater
burnout detection function (model numbers E5ZD-
j
H-E).
The current value set with Detection Level Write is compared with the current
from the Current Transformer for the heater. If the current from the Current
Transformer falls below the value set for the detection current level, and HB
alarm output switch ON until the current level again rises to the detection level.
When the detection level is exceeded again, the HB alarm output will turn OFF.
If the detection level is set to 0.0, the HB alarm output will not operate. This will
not affect the operation of the HS alarm. (The HS alarm output will turn ON if the
Current Transformer current is 0.5 A or greater when the control output is OFF.)
If the detection level is set to 0.0 when the HB alarm output is ON, the HB alarm
output will go OFF.
Temperature Control Commands (All Controllers)
Section 4-2