Technical specifications
8.5 Hardware description
SIMATIC IPC277E
116
Operating Instructions, 11/2019, A5E35783335-AE
Pin assignment RS485
Pin
Short description
Meaning
1
Data-
Transmit / receive data - (I/O) for half-duplex mode
2
Data+
Transmit / receive data+ (I/O) for half-duplex mode
3
nc
4
nc
5
M
Signal ground
6
nc
7
nc
8
nc
9
nc
8.5.2.3
CFast
Pin
Short name
Meaning
S1
SGND
Signal GND (ground for signal integrity)
S2
A+
SATA differential
S3
A-
SATA differential
S4
SGND
Signal GND (ground for signal integrity)
S5
B-
SATA differential
S6
B+
SATA differential
S7
SGND
Signal GND (ground for signal integrity)
PC1
CDI
Card Detect In
PC2
GND
Device GND
PC3
TBD
TBD (not connected)
PC4
TBD
TBD (not connected)
PC5
TBD
TBD (not connected)
PC6
TBD
TBD (not connected)
PC7
GND
Device GND
PC8
LED1
LED Output (not connected)
PC9
LED2
LED Output (not connected)
PC10
IO1
Reserved Input/Output (not connected)
PC11
IO2
Reserved Input/Output (not connected)
PC12
IO3
Reserved Input/Output (not connected)
PC13
PWR
Device Power (3.3V)
PC14
PWR
Device Power (3.3V)
PC15
GND
Device GND
PC16
GND
Device GND
PC17
CDO
Card Detect Out