API Command Reference Appendix A
A-18 NetScan User’s Manual
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 = 128 for NetScan.
The chassis is chan = 0.
type is the type to assign to those channels.
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 argum ents 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 c onfiguration of the channel. Each channel
must be assigned a channel type in order for it to be included in the scan group. Likewise, ass igning a channel
type of 0 will remove that channel from the scan group.
The following table outlines the channel types for NetScan.
Channel Types
NetScan
0
Null
1-9
Thermocouple Card
10
(N/A)
11
Volts Card
12,13,14
Volts Card
15
Reserved
16,17,18
Reserved
19
(N/A)
20
High-Voltage Card
21,22
High-Voltage Card
23,24,25,26
Volts Card
27
(N/A)
28,29
High-Voltage Card
30
High-Voltage Card
31-50
Thermocouple Card
51-59
(N/A)
60-99
Reserved
100-110
Reserved
111-127
Reserved
228-238
Reserved
The following list outlines the channel type definitions:
Null Type: The null channel type is type 0. Assigning a channel to the null type will remove the channel from
the scan group.
Thermocouple Card Types: See the following tables for details.
Volts Card Types: See the following tables for details.
High-Voltage Card Types: See the following tables for details.
Reserved Types: Reserved types are types that are reserved to the internal processes of the unit. Among
these types, 90 and 91 are reserved for chassis calibration. Refer to Chapter 6 for calibrati on det ails.