TANDELTA OQSExISG2, Руководство пользователя, Страница: 79 / 130

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address> relative to the software Version No. variable. Version and Serial No. information is as
defined below and must be correctly interpreted by the receiving system. If the command is
correctly interpreted, the Tan Delta unit addressed will acknowledge the command with the Ack
code, echo the number of bytes it will transmit, and send a response containing the data
requested, followed by a checksum. If the command is not correctly interpreted, the Tan Delta
unit addressed will acknowledge with the Error code and a checksum. If the unit addressed
cannot be found, there will be no reply.
The command string is 10 bytes long (no. of bytes in each field as subscript):
“!”,<09
1
>,<iaddr
1
>,“R”,“v”,<start address
2
>,<length
1
>,<cksm
2
>
The response string comprises the acknowledge character, the <count> of bytes to follow and
then <length> bytes of data, followed by a 16 bit checksum. The start address should be 0000 to
return:-
Software Version No: 4 byte floating point version no.
Thus the response string is <length> + 4 bytes long (no. of bytes in each field as subscript):-
“A”,<2
1
>,<length bytes of data>,<cksm
2
>
or, in case of error: “E”,<02
1
>,< FFB8
2
>
11.1.7 Parameter Addresses
Parameter Start Addr Access
Cal Zero 0x0000 R/W
Instrument Address 0x002C R/W
Serial Type 0x002D R/W
Max Temp 0x002E RO
Serial No. 0x004E RO
Oil Data String 0x0056 R/W
Hardware Version No. 0x007B RO
CAN Transmission Type 0x00A4 R/W
CAN Event Timer 0x00A5 R/W
CAN TPDO settings 0x00A7 R/W
Filter TC 0x00EF R/W (V2.10+)
Baud Rate 0x00F0 R/W (V2.10+)
CAN Bit Rate 0x00F1 R/W (V2.10+)
11.2 CANopen
The OQS-CAN Oil Quality Sensor measures the Oil Condition, Oil Temperature and Ambient
(Sensor) Temperature. The range is from a nominal -20% to +60% Oil Condition units and -30 to
+130C. The measured value is transmitted on the CAN-bus using the CANOpen protocol based on
the CAN in Automation standard profile CiA DS 404 V1.2. The Sensor samples at 100 samples per
second, filters and converts the raw signal to a conditioned output signal.