Interpreters Document



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dps Interpreters

Typical Interpreter Line: 
Step 
Op-Code 
Action Fields
Goto Fields 
10 
AE 
10 03 02 00 
E1 11 E4 0D FF 99 00 00 00 00 
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Page
96 
B0 Op-Code: Block Transfer to RAM and Execute - Mode 36
Supported BY: 
 
Class 2 Interpreter 1 
 
Description: 
 
The B0 Op-Code is used to build a mode 36 message for downloading a routine to control module RAM.
Depending on the product being programmed this Op-Code may need to be preceded by a mode 34 message 
(see Op-Code 34 ). Using the exceptions described, the utility controls when the code downloaded to RAM is 
executed. 
The B0 Op-Code uses the global source device ID for all messages. If a source device ID other than the 
current source device ID needs to be used, the Interpreter instructions should contain a 01 Op-Code prior to 
this Op-Code. 
Action Fields: 
AC0: 
Target Device ID
AC1: 
Routine number to download
AC2: 
Not used 
AC3: 
Exceptions 00-03
. The RAM download address is determined from the routine section. 
00 - Download routine and receive completion response but DO NOT execute 
01 - Download routine and receive completion response then send separate execute message 

The “execute” message will contain NO data bytes and also NO address information. 
02 - Send execute message with zero length and with the address of the indicated routine 
03 - Send routine with transmit type of execute
Exceptions 80-83
. The RAM download address is determined from the routine section. 
80 - Download routine and receive completion response but DO NOT execute
81 - Download routine and receive completion response then send separate execute message 

The “execute” message will contain NO data bytes and will have the address information. 
82 - Send execute message with zero length and with the address of the indicated routine 
83 - Send routine with transmit type of execute
*Note: 
A prolog and routine are both contained within the routine section of utility file; however, they are different. 
The prolog is a value that precedes each packet of information. With a routine, the data is downloaded to 
the controller only once. A prolog would remain constant during the downloading of a routine. 

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