
4-46
Installing 575 System Hardware SIMATIC 545/555/575 System Manual
Establishing CPU Communication (continued)
Figure 4-25 shows the pinout for Port 1 on the 575 CPUs.
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2
3
4
5
6
7
8
9
10
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12
13
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18
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23
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25
DTR
DCD
Signal GND
CTS
RTS
RD
TD
Chassis GND
Figure 4-25 Port 1 Pinouts
Figure 4-26 shows the pinouts for Ports 2, 3, and 4 on the 575 CPUs.
1
2
3
4
5
6
7
8
9
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12
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15
16
17
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23
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25
CH2_DTR
CH2_DCD
Signal GND
CH2_CTS
CH2_RTS
CH2_RD
CH2_TD
Chassis GND
Signal GND
CH3_RD*
CH3_RD
CH3_TD*
CH3_TD
CH4_RD*
CH4_TD*
CH4_TD
Signal GND
CH4_RD
Figure 4-26 Port 2, 3, and 4 Pinouts
Pinout for Serial
Port 1
Pinouts for Serial
Ports 2, 3, and 4
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