Module overview
3.2 Digital input modules
ET 200MP Distributed I/O System
24 System Manual, 01/2013, A5E03723484-01
3.2 Digital input modules
Overview of properties
The table below shows the essential properties of the digital input modules.
Table 3- 2 Digital input modules
Order no.: 6ES7521-1BH00-0AB0 6ES7521-1BL00-0AB0 6ES7521-1BH50-0AA0 6ES7521-1FH00-0AA0
Short description DI 16x24VDC HF DI 32x24VDC HF DI 16x24VDC SRC BA DI 16x230VAC BA
Number of inputs 16 32 16 16
Electrical isolation
between channels
No Yes No Yes
Number of potential
groups
1 2 1 4
Rated input voltage 24 V DC 24 V DC 24 V DC 120/230 VAC
Diagnostic interrupt Yes Yes No No
Hardware interrupt Yes Yes No No
Isochronous mode
supported
Yes Yes No No
Input delay 0.05 ms to 20 ms 0.05 ms to 20 ms 3 ms 25 ms
Reference
Additional information on the technical specifications of the modules is available in the
respective manuals.
3.3 Digital output modules
Overview of properties
The table below shows the essential properties of the digital output modules.
Table 3- 3 Digital output modules
Order no.: 6ES7522-1BH00-0AB0 6ES7522-1BL00-0AB0 6ES7522-1BF00-0AB0
Short description DQ 16x24VDC/0.5A ST DQ 32x24VDC/0.5A ST DQ 8x24VDC/2A HF
Number of outputs 16 32 8
Type Transistor Transistor Transistor
Electrical isolation between
channels
Yes Yes Yes
Number of potential groups 2 4 2
Rated output voltage 24 V DC 24 V DC 24 V DC
Rated output current 0.5 A 0.5 A 2 A
Diagnostic interrupt Yes Yes Yes
Isochronous mode supported Yes Yes No