Omron E5ZD, Руководство по эксплуатации

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103
fer to Section 4-1-2 End Codes for a description of the other possible end codes
and their meanings.
4-2-26 Alarm Point Write: WU
This command can be used on models equipped with the HB and HS alarm func-
tion (E5ZD-
j
H
jjj
-E). It is used to designate the control points that are to
have HB and HS alarms. It is necessary to execute this command for the alarms
to be enabled because the alarms are turned OFF at the factory for all control
points.
Note Alarm Point Write cannot be used if any of the control points is being autotuned
or is otherwise operating, regardless of whether or not the setting for that control
point is being changed.
Command Format The format for this command is as shown below. The number of the Unit whose
points are to be set must be specified and the data code must be 02. Each of bits
0 through 7 of the setting data is assigned to a control point as shown below. If
the bit for a control point is OFF (0), the HB and HS alarms are turned OFF (the
default). If the bit is ON (1), the HB and HS alarms are turned ON. The leftmost
bits must be set to 0. If they are not, an error and an end code of 15 will be gener-
ated. For the E5ZD-4
jjj
-E, bits 4 to 7 must be set to 0. For the
E5ZD-6
jjj
-E bits 6 to 7 must be set to 0. All bits are set to 0 at the factory.
@ 0
Header code
Terminator
*
FCS
Always 0.
Point W U 0 0 0 2 0 0 CR
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
Data code Always 0.
Setting
code
Bit No.
To determine the value to be input for the setting, convert the bits to two-digit
hexadecimal values, treat each character as ASCII, and convert them indepen-
dently to the hexadecimal equivalent of the ASCII code. For example, the value
to set HB and HS alarms for control points 0 through 2 and cancel the HB and HS
alarms for the remaining control points of a 6-point E5ZD would be 07
hex
. A 0 in
ASCII converts to hexadecimal 30, and a 7 converts to 37. The two digits of the
setting would thus be 30
hex
, 37
hex
.
Command Examples The following command is used to set HB and HS alarms for points 0, 2, and 4 of
Unit 2, and to cancel the alarms for points 1, 3, and 5.
*
@ 0 2 W U 0 0 0 2 0 0 2 A 3 3 CR
Temperature Control Commands (All Controllers)
Section 4-2