Siemens SIMATIC ET 200SP - Page 35

Application planning
Distributed I/O system
34 System Manual, 09/2019, A5E03576849-AJ
Table 4- 1 Selecting a suitable BaseUnit for I/O modules
Selecting a BaseUnit
I/O module
(example)
Examples of suitable I/O modules for BU types
I/O module (example)
BaseUnit
BU type
A0
See Digital, fail-safe,
communication, tech-
nology or analog
modules without tem-
perature measure-
ment (Page 38)
Digital, fail-safe,
technology or com-
munication module
• 6ES7...
A0
• 24 V DC
• 15 mm wide
DI 16×24VDC ST
(6ES7131-6BH00-0B
A0
)
BU15-P16+A0+2D
(6ES7193-6BP00-0D
A0
)
BU type
A1
See Analog modules
with temperature
measurement
(Page 39)
Analog module
with
temperature meas-
urement*
• 6ES7...
A1
• 24 V DC
• 15 mm wide
AI 4×RTD/TC 2-/3-/4-
wire HF
(6ES7134-6JD00-0C
A1
)
BU15-
P16+A0+2D/T(6ES7193-
6BP00-0D
A1
)
Analog module
with-
out
temperature
measurement**
• 6ES7...
A1
• 24 V DC
• 15 mm wide
AI 4xU/I 2-wire ST
(6ES7134-6HD00-0B
A1
)
BU type
B0
(BU..B, dark-colored
BaseUnit)
Digital output module
with relay
• 6ES7...
B0
• Up to 230 V AC
• 20 mm wide
RQ 4×120VDC-
230VAC/5A NO ST
(6ES7132-6HD00-0B
B0
)
BU20-P12+A4+0B
(6ES7193-6BP20-0B
B0
)
BU type
B1
(BU..B, dark-colored
BaseUnit)
Digital modules
• 6ES7...
B1
• Up to 230 V AC
• 20 mm wide
DI 4×120..230VAC ST
(6ES7131-6FD00-0B
B1
)
BU20-P12+A0+4B
(6ES7193-6BP20-0B
B1
)
BU type
C0
(BU..D, light-colored
BaseUnit)
Fail-safe power mod-
ule
• 6ES7...
C0
• 24 V DC
• 20 mm wide
CM AS-
i Master ST/F-
CM AS-i Safety ST
• 6ES7...
C1
• Up to 30 V DC
• 20 mm wide
CM AS-i Master ST
(3RK7137-6SA00-0B
C1
)
BU20-P6+A2+4D
(6ES7193-6BP20-0D
C0
)