
BL20
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-1 O-0
n+1 (Data for modules to the right)
I/O Data Map 1
B20-4A
Part Number
Count
Pinout
Current
Individual
Diagnostics
Wire-Break
Detection
I/O Map
BL20-2DO-R-NO with BL20-S4*-SBCS**
2 B20-4A 2 A 1
BL20-2DO-R-NC with BL20-S4*-SBCS**
2 B20-4A 2 A 1
BL20-2DO-R-CO with BL20-S4*-SBBS**
2 B20-4B 2 A 1
* T = Tension clamp
S = Screw clamp
** Base modules sold separately. See pages C58 - C61.
B20-4B
Output Connectors
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