Honeywell CM4 - Page 38

33 Rev. 2.4 (3/05)
Honeywell Analytics CM4 Protocol Manual
Lock Keyboard This command allows you to lock out the
0x53 keyboard. The keyboard can be disabled,
preventing unauthorized user intervention by
enabling the keypad lock out and sending a valid
key code. This allows only persons with the key
code to operate the keypad.
Command packet to instrument:
Command Code (0x53) - 1 byte
Keypad Status -1 byte
bit 0: Lock or unlock keypad
0 = Unlocked
1 = Locked
bits 1-7: Undened
Key code - 2 bytes (valid 0000-9999)
Response packet from instrument:
Command Code (0x53) - 1 byte
CM4 Date - 2 bytes
CM4 Time - 2 bytes
Status -1 byte
0x00 = Saved and veried
0x01 = Key code invalid
0xff = Error, not saved
Set 2mA Fault This command congures the unit for an output
Operation - 0x54 option of 2 milliamperes rather than the default 4
milliamperes.
Command packet to instrument:
Command Code (0x54) - 1 byte
Enable/Disable - 1 byte
0 = Featured disabled
1 = Feature enabled
Response packet from instrument:
Command Code (0x54) - 1 byte
CM4 Date - 2 bytes
CM4 Time -2 bytes
Status - 1 byte
0x00 = Feature programmed
0xff = Error occurred