RACE & ROLLER ASSEMBLY FORWARD & REVERSE PINION FRONT 5L5773 - Caterpillar

IID 00 - Special Parameter Command
IID 00 is used to read or write special parameters. IID 00 is used when IID 24 or IID 25 cannot be used. The response to an IID 00 will be an IID 25 Single Parameter Read Response. An example of the IID 00 message is: $500000zz00580083ddddddcs. This example contains three bytes of data.
Table 1
IID 00 - Special Parameter Command
Bytes(s) Description
1 - 4 Standard Preamble
5 Reply Format
$00 = ASCII
6 Unit Number Data is being written to
3500B Marine Engine Unit Number
$21 = Electronic engine controller (Port)
$22 = Electronic engine controller (Starboard)
$24 = Electronic engine controller (Single of Center)
3500B Generator Set Unit Number
$21 - $26 = Electronic engine controller
$28, $29 (number 1-8)
EMCP II Generator Set Unit Number
$58 - $5F = GSC (number 1-8)
Customer Communication Module Unit No.
$61 = CCM
7, 8 PID
9 - 11(1) Data value of parameter.
12 Checksum of message followed by an ASCII carriage return ($0D)
(1) The number of bytes will depend on the PID.IID 10 - Broadcast Response
This IID is used to broadcast data from the CCM to the host device. The CCM will send this message if the time to broadcast data has elapsed. In order to send an IID 10 message, ALL of the parameters must be present on the CAT data link. When IID 10 is used, the data will be two bytes in length. If a parameter only has one data byte, zeros will be added in front of the data. An example of the IID 10 message is: $500110zz0124ddd120ddd220ddd320ddd420 ddd520ddd620ddd720ddd8cs.
Table 2
IID 10 - Broadcast Response
Byte(s) Description
1-4 Standard preamble (50 xxyyzz)
5 Parameter List Number
$01 - $08 show which list 1 through 8 is being sent.
6 Unit Number Data is being written to
3500B Marine Engine Unit Number
$21 = Electronic engine controller (Port)
$22 = Electronic engine controller (Starboard)
$24 = Electronic engine controller (Single of Center)
3500B Generator Set Unit Number
$21 - $26 = Electronic engine controller
$28, $29 (number 1-8)
EMCP II Generator Set Unit Number
$58 - $5F = GSC (number 1-8)
Customer Communication Module Unit No.
$61 = CCM
7 Separator(1)
8,9 Data for 1st PID
10 Separator(1)
11, 12 Data for 2nd PID
13 Separator(1)
14, 15 Data for 3rd PID
16 Separator(1)
17, 18 Data for 4th PID
19 Separator(1)
20, 21 Data for 5th PID
22 Separator(1)
23, 24 Data for 6th PID
25 Separator(1)
26, 27 Data for 7th PID
28 Separator(1)
29, 30 Data for 8th PID
31 Checksum of message
(1) A separator may or may not be present depending on bytes 8 and 9 of IID 13.IID 10 can will be either binary or ASCII. The message format is determined by bytes 8 and 9 of IID 13. The entire broadcast list will not be returned if any of the following conditions are met:
The GSC number or the ECM number is not available.
The GSC or the ECM does not support any of the PID in IID 13.
The PID contains more than 2 bytes of data.Refer to PID $00 $80 for information on the device ID. Refer to IID 13 for information on creating broadcast lists. Refer to Operation and Maintenance Manual, SEBU6874, "Programming Examples for M5X Protocol".IID