Datasheet

3.2. Revision (REV)
The revision command requests the device type and hard- and software revision of the
reader. The reader returns its device type and it’s hard- and software revision. Revision has
no parameters and returns no error codes.
Instruction:
REV<CR>
Response, if successful:
PRODUCT_NAME<SPACE>HW_revision[4bytes]SW_revision[4bytes]<CR>
15 Bytes product name (filled with Spaces) + 4 bytes HW-Revision + 4 Bytes Software-
Revision + <CR>
Possible Error Response:
UPA<CR>
Example for a response:
DESKID_ISO<5 Times Space>01000101<CR>
Interpretation:Product name: DESKID_ISO
Hardware-Revision: 01.00
Software-Revision: 01.01
3.3. Standby (STB)
The standby command sets the reader in a power save mode. The RF power is turned off.
This means that all tags that might be in the field will also be powered down. If successful it
returns GN8 (“Good Night”). The reader will not accept any commands until a Wake Up
Command (WAK) is received. Standby has no parameters.
Instruction:
STB<CR>
Response, if successful:
GN8<CR>
Possible Error Response:
UPA<CR>
metraTec MiFare Protocol Guide Page 9 of 38