937B Controller Instruction Manual
pg. 72
9.4 Relay and Control Setting Commands
Command
Parameter
Response
Function
SPm
(m=1 to 12)
d.dd E
ee
(d,e=0 to 9)
d.dd E
ee
(d,e=0 to 9)
Query or set a set point for relay m, response with the
current setting value.
If 0 is used as the parameter, the set point will be set as its
low limit value.
SHm
(m=1 to 12)
d.dd E
ee
(d,e=0 to 9)
d.dd E
ee
(d,e=0 to 9)
Query or set a hysteresis for relay m, response with the
current setting value.
SDm
(m=1 to 12)
ABOVE
or
BELOW
ABOVE
or
BELOW
Query or set the direction for relay m, response with the
current setting value. For CC and HC, only BELOW can be
selected.
NAK162
For CC and HC as the relay direction is fixed to BELOW.
ENm
(m=1 to 12)
SET,
ENABLE,
or
CLEAR
SET,
ENABLE,
or
CLEAR
Query or set status for relay m. Response with current
Enable status.
ENABLE
enables the relay, its status
depends on the pressure and set point value,
SET
forces
relay activation, regardless of pressure, and
CLEAR
disable
relay.
SSm
(m=1 to 12)
SET
or
CLEAR
Query all the relay setting status,
SET
is activated, and
CLEAR
is disabled.
ENA
ddd..ddd
(d=0,1,2)
Query single relay set point
status (relay1 relay 2 …relay
12).
0: clear; 1: set; 2: enable.
SSA
ddd..ddd
(d=0,1)
Query all 12 relay set point status (relay1 relay 2 relay 12).
0: clear; 1: set.
Table 9-4 937B Relay and Control Serial Setting Commands