Omega Vehicle Security 1400 manual 00256, 01024, 001,1,002,0,003,0 …, #123101.20,04/24/93

API Commands Appendix A

•Stop Scan Pointer: This field represents the location in the current read block that the stop event occurred. This pointer will always be relative to the trigger point with the trigger point always oriented at location 0. Since the stop event must always occur after the trigger event this pointer will always be greater than 0. If the stop event has not yet occurred at the time of the U6 query, this field will have the value of -0999999.

•Stop Time Stamp: This field represents the Time/Date that the stop event occurred for the current read block. This field takes on the same format as other time/date stamp fields described elsewhere in this manual. If the stop event has not yet occurred at the time of the U6 query, then this field will have the value 00:00:00.00,00/00/00.

•End Scan Pointer: This field represents the location in the current read block that the end scan occurred. This pointer will always be relative to the trigger point with the trigger point always oriented at location 0. Since the end scan must always occur after the trigger event this pointer will always be greater than 0. If the end scan has not yet occurred at the time of the U6 query, this field will have the value of -0999999. This field will always be the same as the Stop Scan Pointer, unless a post-stop count is specified (Y command) in which case the End Scan Pointer will be greater than the Stop Event Pointer by the value of the post-stop count.

•Block Status: This field represents the status of the current read block. If the current read block is not yet completely written then the value of this field will be 00. If the current read block has been completely written and has terminated normally the value will be 01. If, however, the current read block has prematurely terminated (because of user intervention) the value will be 02.

Note: Trigger blocks are not assigned a trigger block number per se. The trigger block numbers referred to in the U6 examples (in Appendix C are relative to the read and write blocks, respectively.

U7: Returns the input channel to digital output channel assignments in the form A? Achan,output for each channel that is currently assigned to a digital output.

U8: Reads the current configuration settings for each channel configured in the unit. This command returns the same information in as the C? command except that it returns it for all channels which are configured.

U9: Read the Digital Inputs. This command will read the current state of the digital inputs. This function is performed by reading each of the eight digital inputs, converting each input to a binary (high is 1 and low is 0) and converting that aggregate binary 8-bit number into a decimal number. The decimal number is then returned as the response nnn where it has the following form: 000 ≤ nnn ≤ 255.

U10: Queries the installed memory option. This command will return the amount of memory installed (in Kbytes). The possible responses are:

00256	- 256 Kbyte option	04096 - 4 Meg option
01024	- 1 Meg option	08192 - 8 Meg option

U11: Queries all channels having programmed valid alarm setpoints. The response is

CCC,A,CCC,A,CCC,A…where: CCC is a channel number in 3-didgit format, and A is the alarm state with 0 indicating “not in alarm state,” and 1 indicating “in an alarm state.” An example of a response in which channel 1 is the only channel in an alarm state is as follows:

001,1,002,0,003,0 …

U12: Reads the last calibration time/date stamp. The response is the # (number sign, to distinguish it from other time/date stamps) appended with the time/date of the last calibration. For example:

#12:31:01.20,04/24/93

U13: Queries the last scan read.

U14: Queries the card type. Returns card ID for each card slot. Valid card IDs for use with ChartScan are:

-1- Card not installed 16 - TC/Volts card

17 - High volts card

Note: This command can only be issued when all channels are in an unconfigured state. If any channel is configured, the system will issue a command conflict error in response to the U14 command. Also see QC? And C commands.

U15: Queries the product information. The response to this command is the current product information including revision levels.

U16: This command queries the measuring mode parameters defined by the Set Measuring Mode (M#), Set Burst Mode Frequency (F#), and Set Averaging Weight (W#) commands. The response has the following form:

M#modeF#freqW#wt

A-58 ChartScan User’s Manual