IOtech MultiScan 1200, User Manual

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TempScan / MultiScan User's Manual Chapter 16: API Command Reference 299
C
- Configure Channels
TYPE Channel
EXECUTION
Deferred
SYNTAX
Cchans,
type
[,
[lowsp],
[highsp],
[hyst] ]
Configure the channels for the master unit and its slave units.
chans
and
type
are required arguments, while
lowsp
,
highsp
and
hyst
are
optional.
chans
may be in two forms:
chan
(for a single channel where
1
<
chan
<
max
) or
first-last
(for a range of channels where
1
<
first
<
last
<
max
), where
max
=
992
for the TempScan/1100 and
max
=
744
for the MultiScan/1200. The chassis is
chan = 0
.
type
is the type to assign to those channels. The value of
0
(null) will
remove the affected channel from the scan group.
C?
Query current channel configuration.
DESCRIPTION
The optional arguments
lowsp
,
highsp
and
hyst
are the low setpoint, high setpoint and hysteresis values,
respectively, for the Configure Channels (
C
) command. These arguments are only needed if it is desired to
configure alarms on the specified channel(s). The format for these optional arguments follow the rules for
readings input defined under the
Set Data Format (
F
) command.
The channel
type
is used by the unit to determine how a certain channels readings are to be interpreted.
Because of this fact, defining the channel type is critical to the proper configuration of the channel. Each channel
must be assigned a channel type in order for it to be included in the scan group. Assigning a channel type of
0
will remove that channel from the scan group. Reserved types are non-assignable types that are reserved to the
internal processes of the unit. Among these types,
90
and
91
are reserved for chassis calibration. Note that
specifying a reserved type will cause an error.
Note: Specifying a reserved type will cause an error.
Note: Since the Configure Channels (
C
) command is a deferred command, the channel(s) will not actually be
configured until the Execute (
X
) command is processed. Also, since the configuring of channels takes a
good deal of processor time, it is recommended that as many Configure Channels (
C
) commands should
be placed on one command line as possible. This will avoid unnecessary processing time overhead when
configuring many channels.
The following table outlines the channel types for the TempScan/1100 and the MultiScan/1200 units:
Channel Types TempScan/1100 Description MultiScan/1200 Description
0
Null Null
1-9
Thermocouple Card Thermocouple Card
10
Thermocouple Card (N/A)
11
Thermocouple Card and Volts Card Volts Card
12,13,14
Volts Card Volts Card
15
Reserved Reserved
16,17,18
RTD Card Reserved
19
RTD Card (N/A)
20
Reserved High-Voltage Card
21,22
(N/A) High-Voltage Card
23,24,25,26
(N/A) Volts Card
27
(N/A) (N/A)
28,29
(N/A) High-Voltage Card
30
Reserved High-Voltage Card
31-50
Thermocouple Card Thermocouple Card
51-59
Thermocouple Card (N/A)
60-99
Reserved Reserved
111-127
Reserved Reserved
See the following tables for details: