
BL20
Part Number
Input Count
Pinout
Current
Individual
Diagnostics
Wire-Break
Detection
I/O Map
BL20-2DO-24VDC-0.5A-P with BL20-S3*-SBC**
4 B20-3B 0.5 A 1
BL20-2DO-24VDC-0.5A-N with BL20-S3*-SBC**
4 B20-3B 0.5 A 1
BL20-2DO-24VDC-2A-P with BL20-S3*-SBC**
4 B20-3B 2 A 1
BL20-4DO-24VDC-0.5A-P with BL20-S6*-SBCSBC**
4 B20-6B 0.5 A 2
* T = Tension clamp
S = Screw clamp
** Base modules sold separately. See page C58 - C61.
Outputs Data
Out
Byte Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
n–1 (Data for modules to the left)
n
Data for next discrete
modules
O-3 O-2 O-1 O-0
n+1 (Data for modules to the right)
I/O Data Map 2
Out
Byte Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
n–1 (Data for modules to the left)
n Data for next discrete modules O-1 O-0
n+1 (Data for modules to the right)
I/O Data Map 1
B20-6BB20-3B
Output Connectors
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