Expanded Commands For Optical Reader Systems (Mv400/Mv500) - Siemens SIMATIC Ident Function Manual

Byte Value
4.6.4.4

Expanded commands for optical reader systems (MV400/MV500)

The "WRITE-CONFIG" command
During initialization ("INIT"), the Ident profile automatically executes the "WRITE-CONFIG"
command. The parameter values of the "WRITE-CONFIG" command depend on whether the
Ident profile is used with or without a communications module.
Table 4- 68 WRITE-CONFIG
CMD OFFSET
BUFFER
0x78 Offset in the "TXREF"
send buffer
Structure of the configuration data attachment of "WRITE-CONFIG"
Table 4- 69 MV400 when "CONFIG = 0x03"; "LEN_DATA = 0x10"
Byte 1 2...5
Value 0x04 0x00
0x00: "INIT" without program selection
1)
0x01 ... 0x0F: Number of the program to be started ("INIT" with program selection)
Ident profile, Add-on instruction for Rockwell systems
Function Manual, 01/2019, C79000-G8976-C410-03
RFID system Meaning
0x00: Default; the channels of the reader are used in four channel mode.
Note: The setting "0x0F" is identical to "0x00".
With bits 0 to 3 of the "field_ON_time" byte, a channel (frequency) plan can be
created for the situation in which several readers are operated in close proximity.
Readers that use different channels will interfere with each other to a lesser extent.
If only one channel is used per reader, the reader must pause for 100 ms at inter-
vals of 4 seconds (as of ETSI EN 302 208 V1.2.1). With time-critical applications, a
smaller loss in performance can therefore be assumed in contrast to 2 to 4-
channel mode of a reader.
If 2 to 4 channels per reader are used, the reader switches to another channel
after 0.1 seconds in two-antenna mode and after 4 seconds in single-antenna
mode. If only one of the 4 channels is selected, a pause of 100 ms is forced after 4
seconds according to the standard.
FCC and CMIIT variant: Normal: 0x00
LEN_DATA
Length of the parameter
data
6 7...8 9
0x0A 0x00 0x00
CONFIG
0x01 ≙ communication
•
reset, no configuration
data (LEN_DATA = 0)
0x03 ≙ communication
•
reset, configuration data
to be sent
10 11 12 ... 13 14
0x25 0x02 0x00
Configuring the instructions
4.6 Programming the Ident profile
TXREF
Configuration data to be
sent
15 16
0x01 0x00 0x00 ... 0x0F
1)
87