Get The Number Of Gas Tables Available - 0X3A - Honeywell CM4 Technical Handbook

CM4 Four-Point Continuous Monitor

Get the Number of Gas Tables Available - 0x3A

This command allows you to query the unit for the number of loaded
gas tables in the unit.
Command packet to instrument:
Command Code (0x3A) - 1 byte
Response packet:
Command Code (0x3A) - 1 byte
CM4 Date - 2 bytes
CM4 Time - 2 bytes
# of Gas Tables - 1 byte (1-255)
Get Printer Setup - 0x3B
This command queries the unit for the printer configuration.
Command packet to instrument:
Command Code (0x3B) - 1 byte
Response packet from instrument:
Command Code (0x3B) - 1 byte
CM4 Date - 2 bytes
CM4 Time - 2 bytes
Setup Status - 1 byte
bit 0: Printer port enable/disable
0 = Disable
1 = Enable
bits 1-2: Printer report format
00 = Continuous
01 = Summary
10 = Compressed
11 = Invalid
bits 3-5: Printer baud rate
000 = 1200
001 = 2400
010 = 4800
011 = 9600
CM4 Technical Manual
100 = 19200
bit 6: Printer hardware handshaking (flow control)
0 = Disabled
1 = Enabled
bit 7: Undefined
Get Gas Table Data - 0x3C
This command allows you to view individual gas tables that are
contained within the system.
Command packet to instrument:
Command Code (0x3C) - 1 byte
Gas to table to retrieve - 1 byte (0-255)
Response packet from instrument:
Command Code (0x3C) - 1 byte
CM4 Date - 2 bytes
CM4 Time - 2 bytes
(filled with zeroes if error)
MDA Gas Abbr. - 6 bytes (not null terminated)
Full Scale - 2 bytes
TLV - 2 bytes
LAL - 2 bytes
LDL - 2 bytes
Format Code - 1 byte
Revision # - 1 byte (1-255) (always filled)
Status
0x00 = Read OK
0x01 = Invalid Gas # index
0xff = Bad read
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