Here are the brief English parameters of Allen - Bradley 1756 - OF4:
Model: 1756 - OF4
Manufacturer: Allen - Bradley
Series: ControlLogix
Output Channels: 4
Output Type: Voltage or current
Output Range: ±10V; 4 - 20mA
Voltage Resolution: 15 - bit across 10.5V, 320μV/bit
Current Resolution: 15 - bit across 21mA, 650nA/bit
Backplane Current (5V): 150mA
Backplane Current (24V): 120mA
Total Backplane Power: 5.8W
Maximum Power Dissipation: 3.25W (4 - channel current)
Thermal Dissipation: 10.91BTU/hr
Open - Circuit Detection: Only for current output (output should be set to > 0.1mA)
Over - voltage Protection: 24V DC
Short - Circuit Protection: Electronically current - limited to 21mA or less
Drive Capability: Voltage > 2000Ω; Current 0 - 50Ω
Settling Time: <2ms to 95% of final value with resistive loads
Calibrated Accuracy at 25℃: Better than 0.05% of range from 4 - 21mA, - 10.4 - 10.4V
Calibration Interval: Typically 12 months
Offset Drift: 50μV/℃; 100nA/℃
Gain Drift with Temperature: Voltage 25ppm/℃, 520μV/℃; Current 50ppm/℃, 1050nA/℃
Module Error: Voltage 0.15% of range; Current 0.3% of range
Module Input Scan Time: Minimum 12ms (floating - point), 8ms (integer)
Data Format: Integer mode (left - justified, 2's complement), IEEE 32 - bit floating - point
Isolation Voltage: 250V (continuous), reinforced insulation type, output channels to backplane; no isolation between individual output channels (routinely tested at 1350V AC for 2s)
Slot Width: 1
Enclosure Type: None (open - style)