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Section 5 Communications Commands
RFID System
Operation Manual
Section 5
Communications
■ Frame Dividing Method
Divided the command into frames as shown below if the command is longer than 271 characters.
1. Divide the command so that each frame is 271 characters or less.
2. Attach a terminator (*CR) to the last frame (frame n). Attach a delimiter (CR) to all other frames.
3. The first frame (frame 1) must contain the command code, data code specification, Read/Write Head
and channel specifications, and the start address. If any of these are missing, a command input error
will occur. The write data does not have to be contained in the first frame.
4. Make sure that data is divided correctly without any single frames containing only AA*CR or XZ*CR
(i.e., @Controller No., AA, FCS,*CR or @Controller No., XZ, FCS,*CR).
5. The controller number and FCS must be included in all frames.
CR
CR
CR
CR
A/H 1/2
: :
XW
FCS
FCS
FCS
FCS
@Controller No.
@Controller No.
@Controller No.
@Controller No.
1 frame = 271 characters max.
Frame 1
Frame 2
Frame n-1
Frame n
Start address Write data 1
Write data 2
Write data n-1
Write data n
*
:
CR
FCS
@Controller No.
CR
FCS
@Controller No.
CR
FCS
@Controller No.
CR
FCS
@Controller No.
CR
FCS
@Controller No.
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