PAXDR000 Red Lion Controls, PAXDR000 Datasheet - Page 24

• 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

SENDING SERIAL COMMANDS AND DATA
command character must be constructed. A command string consists of a
command character, a value identifier, numerical data (if writing data to the
meter) followed by a command terminator character * or $.
Command Chart
Command String Construction
does not respond with an error message to invalid commands. The following
procedure details construction of a command string:
1. The first characters consist of the Node Address Specifier (N) followed by a
2. After the optional address specifier, the next character is the command
3. The next character is the Register ID. This identifies the register that the
4. If constructing a value change command (writing data), the numeric data is
5. All command strings must be terminated with the string termination
Register Identification Chart
1
2
3
. The registers associated with the P command are set up in Print Options (Module 7).
. Register Names are also used as Register Mnemonics during full transmission.
. Unless otherwise specified, the Transmit Details apply to both T and V
ID
M
W
Command
B
C
D
E
G
H
K
O
Q
S
U
X
A
F
J
When sending commands to the meter, a string containing at least one
The command string must be constructed in a specific sequence. The meter
2 character address number. The address number of the meter is programmable.
If the node address is 0, this command and the node address itself may be
omitted. This is the only command that may be used in conjunction with other
commands.
character.
command affects. The P command does not require a Register ID character.
It prints according to the selections made in print options.
sent next.
characters * or $. The meter does not begin processing the command string
until this character is received. See Timing Diagram figure for differences
between terminating characters.
I
Commands.
N
V
R
P
T
Rate A
Rate B
Rate C
Total A
Total B
Total C
Scale Factor A
Scale Factor B
Scale Factor C
Count Load A
Count Load B
Setpoint 1
Setpoint 2
Setpoint 3
Setpoint 4
Auto/Manual Register
Analog Output Register
Setpoint Register
VALUE DESCRIPTION
Description
Node (Meter) Address
Specifier
Transmit Value (read)
Value change (write)
Reset
Block Print Request
(read)
REGISTER
NAME
MMR
AOR
SOR
RTB
RTC
TOA
TOB
TOC
SFC
RTA
SFA
SFB
LDA
LDB
SP1
SP2
SP3
SP4
Notes
Address a specific meter. Must be
followed by two digit node address. Not
required when address = 00.
Read a register from the meter. Must be
followed by register ID character.
Write to register of the meter. Must be
followed by register ID character and
numeric data.
Reset a register or output. Must be
followed by register ID character
Initiates a block print output. Registers
are defined in programming.
1
T
T
T
T, V, R
T, V, R
T, R
T, V
T, V
T, V
T, V
T, V
T, V, R
T, V, R
T, V, R
T, V, R
T, V
T, V
T, V
COMMAND
2
5 digit, positive only
5 digit, positive only
4 negative, 5 positive
6 digit (V), 8 digit (T)
6 digit (V), 8 digit (T)
8 digit
6 digit, positive only
6 digit, positive only
6 digit, positive only
5 negative, 6 positive
5 negative, 6 positive
5 negative, 6 positive
5 negative, 6 positive
5 negative, 6 positive
5 negative, 6 positive
0 - auto, 1 - manual
0 - 4095 normalized
0 - not active, 1 - active
TRANSMIT DETAILS
3
24
24
Command String Examples:
1. Address = 17, Write 350 to Setpoint 1
2. Address = 5, Read Rate A value, response time of 50 - 100 msec. min.
3. Address = 0, Reset Setpoint 4 output
Transmitting Data To the Meter
the Register Identification Chart. Leading zeros are ignored. Negative numbers
must have a minus sign. The meter ignores any decimal point and conforms the
number to the scaled resolution. (ie. The meter’s scaled decimal point position
is set for 0.0 and 25 is written to a register. The value of the register is now 2.5.
In this case, write a value of 250 to equal 25.0).
Note: Since the meter does not issue a reply to value change commands, follow
Transmitting Data From the Meter
(T), a print block command (P) or User Function print request. The response
from the meter is either a full field transmission or an abbreviated transmission.
The meter response is established in Module 7.
Full Transmission

address assigned is 00, two spaces are substituted. A space (byte 3) follows the
unit address field. The next three characters (bytes 4 to 6) are the register
mnemonic. The numeric data is transmitted next.
value exceeds eight digits for total values or five digits for rate values, an *
(used as an overflow character) replaces the space in byte 7. Byte 8 is always a
space. The remaining ten positions of this field (bytes 9 to 18) consist of a minus
sign (for negative values), a floating decimal point (if applicable), and eight
positions for the requested value. The data within bytes 9 to 18 is right-aligned
with leading spaces for any unfilled positions.
(byte 20). When a block print is finished, an extra <SP> (byte 21), <CR> (byte
22), and <LF> (byte 23) are used to provide separation between the transmissions.
Abbreviated Transmission

leaving only the numeric part of the response.
Meter Response Examples:
1. Address = 17, full field response, Rate A = 875
2. Address = 0, full field response, Setpoint 2 = -250.5
3. Address = 0, abbreviated response, Setpoint 2 = 250, last line of block print
These characters only appear in the last line of a block print.
These characters only appear in the last line of a block print.
Numeric data sent to the meter must be limited to Transmit Details listed in
with a transmit value command for readback verification.
Data is transmitted from the meter in response to either a transmit command
The first two characters transmitted (bytes 1 and 2) are the unit address. If the
The numeric field (bytes 7 to 18) is 12 characters long. When the requested
The end of the response string is terminated with <CR> (byte 19), and <LF>
The abbreviated response suppresses the address and register mnemonics,
1-12
7-18
Byte
Byte
1, 2
4-6
13
14
15
16
17
19
20
21
22
23
3
String: N17VM350$
String: N05TA*
String: RS*
17 RTA
SP2
Description
12 byte data field, 10 bytes for number, one byte for sign, one byte
for decimal point
<CR> (Carriage return)
<LF> (Line feed)
<SP> (Space)
<CR> (Carriage return)
<LF> (Line feed)
Description
2 byte Node (Meter) Address field [00-99]
<SP> (Space)
3 byte Register Mnemonic field
12 byte numeric data field: 10 bytes for number, one byte for sign, one
byte for decimal point
<CR> (Carriage return)
<LF> (Line feed)
<SP> (Space)
<CR> (Carriage return)
<LF> (Line feed)
250<CR><LF><SP><CR><LF>
-250.5<CR><LF>
875 <CR><LF>
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