B&B Electronics Zlinx ZP Series - Manual (Page 58)

54 Manual Documentation Number: ZP24D-250RM-SR-2508
B&B Electronics Mfg Co Inc – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104 – www.bb-elec.com
B&B Electronics – Westlink Commercial Park – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445 – www.bb-europe.com
PR (Pull-up Resistor Enable)
Command
<Serial Interfacing> The PR
command is used to set and read
the bit field that is used to
configure internal the pull-up
resistor status for I/O lines.
“1” specifies the pull-up resistor is
enabled. “0” specifies no pull up.
bit 0 - AD4/DIO4 (pin 11)
bit 1 - AD3/DIO3 (pin 17)
bit 2 - AD2/DIO2 (pin 18)
bit 3 - AD1/DIO1 (pin 19)
bit 4 - AD0/DIO0 (pin 20)
bit 5 - AD6/DIO6 (pin 16)
bit 6 - DI8 (pin 9)
bit 7 - DIN/CONFIG (pin 3)
For example: Sending the command “ATPR 6F” will turn bits 0, 1, 2, 3, 5 and 6 ON;
and bits 4 & 7 will be turned OFF. (The binary equivalent of “0x6F” is “01101111”.
Note that ‘bit 0’ is the last digit in the bitfield.
PT (PWM Output Timeout)
Command
<I/O Settings {I/O Line Passing}>
The PT command is used to
set/read the output timeout
value for both PWM outputs.
When PWM is set to a non-zero value: Due to I/O line passing, a time is started which
when expired will set the PWM output to zero. The timer is reset when a valid I/O
packet is received.
RE (Restore Defaults) Command
<(Special)> The RE command is
used to restore all configurable parameters to their factory default settings. The RE
command does not write restored values to non-volatile (persistent) memory. Issue
the WR (Write) command subsequent to issuing the RE command to save restored
parameter values to non-volatile memory.
RN (Random Delay Slots)
Command
<Networking & Security> The RN
command is used to set and read
the minimum value of the back-off
exponent in the CSMA-CA algorithm. The CSMA-CA algorithm was engineered for
collision avoidance (random delays are inserted to prevent data loss caused by data
collisions).
If RN = 0, collision avoidance is disabled during the first iteration of the algorithm
(802.15.4 - macMinBE).
AT Command: ATPR
Parameter Range: 0 - 0xFF
Default Parameter Value: 0xFF _ (all pull-up
resistors are enabled)
Minimum Firmware Version Required: v1.x80
AT Command: ATPT
Parameter Range: 0 - 0xFF [x 100 msec]
Default Parameter Value: 0xFF
Minimum Firmware Version Required: 1.xA0
AT Command: ATRE
AT Command: ATRN
Parameter Range: 0 - 3 [exponent]
Default Parameter Value: 0