Instruction manual

PF2100
Modbus Card Instruction Manual v1.1
©2011 Profire Energy Inc
Jan 5, 2012
Page 4
Modbus Card Specifications
The Modbus Card has the following specifications:
Spec
Value
Operating Temperature:
-
40 C to +60 C
RS
-
485
Signaling
:
Min Differential Receiver Voltage
400
mV
(A to B
)
Absolute
Max Receiver Voltage
15 V (A
to GND,
B
to GND)
Typical Differential
Driver
Voltage
5
V
(Y to Z
)
Maximum Driver Short Circuit Current
+/
-
250
mA
Termination
None or 120 Ohms (user selectable)
Receiver Input Impedance
96
kOhms
Modbus Protocol:
Protocol
Modbus RTU
Baud
R
ate
9600 or 19200 bps (user selectable)
Parity
None
Tx
-
to
-
Rx Delay
2 or 25 ms (user selectable)
Terminal Block:
Maximum Wire Gauge
16 AWG
Physical Dimensions (including components):
Width
59.1 mm
Width (including pluggable header)
68.1 mm
Length
85.7 mm
Height
25.5 mm
Height (including standoff threads)
30.0 mm