PAXDR000 Red Lion Controls, PAXDR000 Datasheet - Page 26

• Manufacturer Part Number: PAXDR000
• Description: AC, Dual Rate, Upgradeable Red
• Manufacturer: Red Lion Controls
• Type: Rate/Totalizerr

Specifications of PAXDR000

• Accuracy: ± (0.01% of Input Signal Frequency)
• Cut Out, Panel: 3.62W x 1.77H Inches
• Dimensions: 3.80W x 1.95H Inches
• Display Digit Height: .56 Inches
• Display Type: LED Adjustable
• Function: Rate/Totalizer
• Input Type: Switch Selectable Pulse
• Keypad Type: 3 Programmable Function (5 Keys Total)
• Number Of Digits: Rate = 5, Totalizer = 8
• Primary Type: Electronic
• Range, Measurement: Rate = 0 to 99999, Totalizer = ±99999999
• Special Features: Programmable Function Keys
• Termination: Cage Clamp
• Voltage, Supply: 85 to 250 VAC
• Lead Free Status / Rohs Status: RoHS Compliant part

analog output signal, an analog output plug-in card needs to be installed (See
Ordering Information). This section replaces the bulletin that comes with the
analog plug-in card. Please discard the separate literature when using the plug-
in card with the PAXDR.

current output use terminals 18 and 19. Only one range can be used at a time.

COMMUNICATION FORMAT
In serial communications, the voltage is switched between a high and low level
at a predetermined rate (baud rate) using ASCII encoding. The receiving device
reads the voltage levels at the same intervals and then translates the switched
levels back to a character.
lists the voltage levels for each standard.
characters (0 to ). Each ASCII character is “framed” with a beginning start bit,
an optional parity bit and one or more ending stop bits. The data format and
baud rate must match that of other equipment in order for communication to
take place. The figures list the data formats employed by the meter.
Start bit and Data bits
receiving device to prepare for reception of data. One bit period later, the least
significant bit of the ASCII encoded character is transmitted, followed by the
remaining data bits. The receiving device then reads each bit position as they are
transmitted.
6.8 MODULE 8 - A
Module 8 is the programming for the analog output parameters. To have an
Enter the analog output type. For voltage output use terminals 16 and 17. For
Select the display that the analog output is to follow:
Data is transferred from the meter through a serial communication channel.
The voltage level conventions depend on the interface standard. The table
Data is transmitted one byte at a time with a variable idle period between
Data transmission always begins with the start bit. The start bit signals the



* Voltage levels at the Receiver
LOGIC
1
0






INTERFACE STATE
space (active)
mark (idle)
= Rate A Value
= Rate B Value
= Rate C Value
ANALOG ASSIGNMENT


SELECTION
ANALOG TYPE



TXD,RXD; +3 to +15 V
TXD,RXD; -3 to -15 V
PAR


8-AnA
RANGE
0 to 20 mA
4 to 20 mA
0 to 10 V
Analog
Type
tYPE



RS232*


NALOG
= Totalizer A Value
= Totalizer B Value
= Totalizer C Value
Assignment
Analog
a-b > +200 mV
a-b < -200 mV
ASIN
PARAMETER MENU
RS485*
O
UTPUT
Scale Value
Analog Low
26
26
AN-LO
Parity bit
a zero or a one, so that the total number of ones contained in the transmission
(including the parity bit) is either even or odd. This bit is used by the receiver
to detect errors that may occur to an odd number of bits in the transmission.
However, a single parity bit cannot detect errors that may occur to an even
number of bits. Given this limitation, the parity bit is often ignored by the
receiving device. The PAX meter ignores the parity bit of incoming data and
sets the parity bit to odd, even or none (mark parity) for outgoing data.
Stop bit
period pause to allow the receiver to prepare to re-synchronize to the start of a
new transmission (start bit of next byte). The receiver then continuously looks
for the occurrence of the start bit. If 7 data bits and no parity is selected, then 2
stop bits are sent from the PAX meter.

corresponds to the low limit of the type selected.
totalizer or rate. The scale value can not be set to read values with more than 6
digits. Reverse acting output is possible by reversing the scaling values.

corresponds to the high limit of the type selected.
totalizer or rate. The scale value can not be set to read values with more than 6
digits. Reverse acting output is possible by reversing the scaling values.


After the data bits, the parity bit is sent. The transmitter sets the parity bit to
The last character transmitted is the stop bit. The stop bit provides a single bit
Enter the display value within the selected Analog Assignment that
The decimal point is determined by the decimal point setting of the assigned
Enter the display value within the selected Analog Assignment that
The decimal point is determined by the decimal point setting of the assigned
P
ARAMETERS



Analog High
Scale Value

AN-HI
ANALOG HIGH SCALE VALUE
ANALOG LOW SCALE VALUE

Character Frame Figure

Pro

to

(
to





)