1. ZPL II, ZBI 2, Set-Get-Do, Mirror, WML Programming Guide
  2. ZPL II, ZBI 2, Set-Get-Do, Mirror, WML Programming Guide
  3. ZPL RFID Commands
  4. ^RW
  • ZPL II, ZBI 2, Set-Get-Do, Mirror, WML Programming Guide
^RW

^RW

Use this command to set the RFID read and write power levels if the desired levels are not achieved through RFID tag calibration. If not enough power is applied, the tag may not have sufficient power for programming, and tag data will fail to encode. If too much power is applied, the extra power may cause data communication errors or may cause the wrong tag to be programmed.

Set RF Power Levels for Read and Write

Printers automatically select the best antenna element and read/write power levels for the media during RFID transponder calibration. The R110Xi4, ZT400 series, and ZT600 series printers also may set the levels during an adaptive antenna sweep. Use ^HL or ~HL to view the antenna element and power settings being used.
For Japan, the printer’s maximum RFID read and write power are limited to comply with local radio regulations. Any power setting of 24 or higher results in the same output.
Format:
^RWr,w,a
Parameters
Details
r
= read power
This parameter sets the power level to match the desired output as calibrated in the factory.
R53.16.3, V53.17.5, and later:
Values:
0 to 30
Default:
16
R60.16.4, R62.16.4, R63.16.4, SP994Q, SP999G, SP1027G, SP1056F, SP1082G, and later:
Values:
0
 to
30
,
H
 (high),
M
 (medium),
L
 (low)
Default:
L
R65.X and older versions of other firmware:
Values:
H =
high
M =
medium
L =
low
Default:
L
w
 = write power
This parameter is ignored on the R110Xi HF printer (firmware version R65.X) because read and write powers cannot be specified separately. The printer uses the value that you specified for read power for both the read and write power settings.
This parameter sets the power level to match the desired output as calibrated in the factory.
R53.16.3, V53.17.5, and later:
Values:
0 to 30
Default:
16
R60.16.4, R62.16.4, R63.16.4, SP994Q, SP999G, SP1027G, SP1056F, SP1082G, and later:
Values:
0
 to
30
,
H
 (high),
M
 (medium),
L
 (low)
Default:
L
Older versions of firmware:
Values:
H =
high
M =
medium
L =
low
Default:
L
a
 = RFID antenna element selection
ZD500R, ZQ511/ZQ521, and ZQ630:
This printer only has one antenna element, so the value used is always
A1
.
ZT400 and ZT600:
This parameter specifies the RFID antenna to be used for RFID operation.
E1
,
E2
,
E3
,
E4
D1
,
D2
,
D3
,
D4
C1
,
C2
,
C3
,
C4
B1
,
B2
,
B3
,
B4
A1
,
A2
,
A3
,
A4
A4
(Continued on next page)
a
 = RFID antenna element selection
(Continued from previous page)
R110Xi4 (V53.17.5 and later):
This parameter specifies the RFID antenna to be used for RFID operation.
Values:
A1, A2, A3, A4, B1, B2, B3, B4, C1, C2, C3, C4, D2, D3, D4, E2, E3, E4, F2, F3, F4 (combinations D1, E1, and F1 are invalid)
Default:
A4
R110Xi HF (R65.X):
This parameter selects the antenna port that provides the best results for reading and writing.
Values:
1 =
antenna port 1
2 =
antenna port 2
Default:
1
Example:
The following command selects the antenna at row D, column 3 on an R110Xi4 printer:
^RW,,D3
Example:
The following command sets the read/write power level to Medium and selects antenna 2 on an R110Xi HF printer:
^RWM,,2
Example:
The following command sets the read and write power levels to High on an R110PAX4 printer:
^RWH,H