Netronix CTU-M Series, Техническое описание

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C
T
U
-M
x
x
NETRONIX CTU-Mxx
NETRONIX .
8
4.
Module settings by on-board switch
Two function of build-in switch:
•
configure to factory settings – press button for 8 seconds
•
change interface and RFID transponder type – press button in schematic:
STEP Number of press 1 2 3 4 5 6
1 MENU1 – interface
selection*
- RS232/485 SPI WIEGAND 1WIRE I2C
2 Triple beep
* - type of interface depends on CTU-M model
5.
Transmission protocols
5.1.
RS-232/485 transmission protocol
In this data sheet RS-232/485 protocol has been confined to descriptions of
commands, responses and their parameters. Header and CRC control sum exist
always and are compliant with full “Netronix Protocol” document.
Command frame:
Header C_CommandName Response_parameters1…n CRC
Response frame:
Header C_Comm1 Response_parametrers…m OperationCode CRC
RS protocol operation can be tested by means of development tools including free of
charge “FRAMER” software”.
5.2.
Protocol for I
2
C transmission
5.2.1.
Data exchange algorithm
A module configured depending on table showed on point 4. operates in I
2
C
interface mode in following sequences:
1. Master (external device) writes command with parameters if necessary into slave
device (CTU module)
2 The command is performed (immediately after receiving byte sent quantity declared
in frame)
3. Master device reads response, its parameters and operation code. In case of
receiving busy byte 0xCB, repeat attempt to read the response after ca. 1 ms