Rockwell Automation 56RF RFID System User Manual - Manual (Page 120)

120 Rockwell Automation Publication 56RF-UM001A-EN-P - October 2011
Chapter 12 RFID Tag Speed
Table 20 - M18 Transceiver
Table 21 - M30 Transceiver
Continuous Read Mode Command Objective
Perform tag read operations as fast as possible.
Operation
Command 5 will be issued from the controller to place an interface RFID
channel into continuous read mode; no additional commands will be required
from the controller in order to retrieve information from a tag. The read type
issued would be a Read Multiple Block or a Read Single Block depending on the
number of blocks requested. The maximum number of blocks that can be read at
one time is 10. Each time the interface reads a tag successfully, the counter value
will increment by 1. If there was an issue reading the tag the counter value will not
increment and the ChError will indicate the error code value.
While the interface is in this mode, it will reject all other commands sent to it for
that channel except a Stop Continuous Read. The interface will not perform its
normal poll cycle on that channel while it is in this mode of operation. During
Continuous Read Mode, the ContReadMode and Busy bit will be set to true.
Max Tag Speed (m/s)
Bytes Read Write
4 0.1984127 0.1771479
8 0.1838235 0.1495886
16 0.1603849 0.1142204
32 0.1277139 0.07748935
64 0.09070295 0.04713646
112 0.06325111 0.02970444
160 0.04855547 0.02168492
2000 0.004899919 0.00191022
Max Tag Speed (m/s)
Bytes Read Write
4 0.3373016 0.3011515
8 0.3125 0.2543007
16 0.2726544 0.1941748
32 0.2171137 0.1317319
64 0.154195 0.08013199
112 0.1075269 0.05049755
160 0.0825443 0.03686436
2000 0.008329863 0.003247374