Isolated 4-20 ma transmitter output, Modbus, Rtu serial communications – Precision Digital PD6310 User Manual
Page 16

Model PD6210 & PD6310 Batch Controllers
Instruction Manual
16
Isolated 4-20 mA Transmitter Output
OUTPUT 
SOURCE 
Rate/process, total, grand total, max, min, set points 1-8, 
Modbus register, or manual control mode 
SCALING RANGE
1.000 to 23.000 mA for any display range.
CALIBRATION
Factory calibrated: 4.000 to 20.000 = 4-20 mA output
ANALOG OUT 
PROGRAMMING 
23.000 mA maximum for all parameters: 
Overrange, underrange, max, min, and break 
ACCURACY
± 0.1% FS ± 0.004 mA
TEMPERATURE 
DRIFT 
0.4 µA/
°C max from 0 to 65°C ambient,
0.8 µA/
°C max from -40 to 0°C ambient
Note: Analog output drift is separate from input drift.
ISOLATED 
TRANSMITTER 
POWER SUPPLY 
Terminals I+ & R: 24 VDC
± 10% . May be used to power
the 4-20 mA output or other devices.Refer to 
Figure 6 on page 23 and Figure 22 on page 30. 
ProVu Series (PD6210): 
All models rated @ 40 mA max. 
ProtEX-MAX (PD8 Series): 
All models @ 25mA max. 
EXTERNAL LOOP 
POWER SUPPLY 
35 VDC maximum
OUTPUT LOOP 
RESISTANCE 
Power supply
Minimum
Maximum
24 VDC
10
Ω 700
Ω
35 VDC (external)
100
Ω 1200
Ω
Modbus
®
RTU Serial Communications
SLAVE ID
1 – 247 (Controller address)
BAUD RATE
300 - 19,200 bps
TRANSMIT 
TIME DELAY 
Programmable between 0 and 199 ms 
 
DATA
8 bit (1 start bit, 1 or 2 stop bits)
PARITY
Even, Odd, or None with 1 or 2 stop bits
BYTE-TO-BYTE 
TIMEOUT 
0.01 – 2.54 second
TURN AROUND 
DELAY 
Less than 2 ms (fixed)
Note: Refer to the P
RO
V
U
®
Modbus Register Tables located at www.predig.com
for details.
