TRADE SECRET AND CONFIDENTIAL INFORMATION AGREEMENT
This agreement is made on the day of 2001.
Betbeen
(“A”)
Liebert Corporation Australia Pty limited (“B”)
A acknowledges receipt from
B a copy of the LECS 15 Communication protocol on the day of 2001, whice is to be used only in the air-conditioner remote monitoring system of
A hereby confirms that it will preserve and maintain in confidence the intellectual property rights of the Protocol, and undertakes not to disadvantage
B Commercially in anyway through its possession of the Protocol.
B agrees to assist A in the implementation of the remote monitoring system.
A: B:Liebert Corporation Australia Pty Ltd Stamped: Stamped:
Signature: Signature:
Date: Date:
LECS 15 COMMUNICA TIONS PROTOCOL
1. Date Format
The port receives and transmits at standard RS232 signal levels. For multiple unit operation diodes may need to be included in the transmit data ( of LECS 15 control ) to prevent data conflict.
Serial data is transmitted and received at 1200 baud.
8 data
1 stop
No parity
Data is received in a strict block format and any data received which does not conform to this format is ignored by the control.
The first byte in the transmitted block contains the unit no. which is being addressed. The unit number corresponds to the unit no. Displayed on the LECS 15 control panel.
2. Control Functions
This is 5 bytes message sent to the LECS 15 control.
Byte 1-( Unit Number-1 ) XOR f0h,e,g,foh for unit no. 1
Byte 2-Control Request 11hex ( ascii DCI char )
Byte 3-Nnmber of bytes to follow in this message
02h in this case
byte 4-Control function No.called reactivate.
00h remote on-also
01h remote off
02h alarm mute
Byte 5-Checksum the least significant byte of the binary sum of bytes 1 to 4. UNITNO is the unit number polled;
TEMP is the control function number.
Response from LECS 15 control.
The control will acknowledge the control function request with a 4 b yte message. Byte 1-unit number ( F0h-92h ) ( see ‘ Control Functions’)
Byte 2-ACK character (06h)
Byte 3-number of bytes following (01h)
Byte 4-checksum of bytes 1 to 3
3. Enquiry Functions
There is a 5 or more byte message sent to the LECS 15 control.
Byte 1-(unit Number – 1) XOR f0h, e.g.f0h for unit no. 1
Byte 2-Enquiry Request 05h (Enq ASCll char)
Byte 3-Number of bytes to follow in this message
(n+2)
Byte 4- Enquiry function no.
00h status dump instantaneous temp & humidity
01h status dump averaged temp & hum
02h ROM data/time dump
03h 48 hour data dump
Byte 4 + n – data necessary for each enquiry function request n bytes long
Byte 4 + n + 1 – checksum
Enquiry Function request and response.
a) 00h status dump with instantaneous temps & humidity
01h status dump with averaged temp & humidity
n=0 in the message, xo the request is 5 bytes long
Byte 1-(unit Number – 1) XOR f0h, e.g.f0h for unit no. 1
Byte 2-Enquiry Request 06h (Ack ASCll char)
Byte 3-Number of bytes to follow in this message 29h
Byte 4-Controller type and ON/OFF status
Bit 0 =－> Unit ON
Bit 1 =－> Alarm Buzzer On
Bit 7 =－> Data Chiller Unit －> LECS15 unit
Bit 2 to 6－Undefined
Byte 5,6－(T emperature * 10) in BCD HI/O byte format.