July 2013 3.7 iTNC 530 HSCI connection overview 213
3.7.5 MC 6341
MC 6341: Main computer for installation in electrical cabinet
Pin layout Connector Function Page
X29 Reserved –
X26, X116 Ethernet data interface 325
X27  RS-232-C/V.24 data interface 327
X141, X142, 
X143, X144
USB 2.0 interface (Type A) 380
X101 +24 V NC power supply 253
X500 HSCI output 1 
(synchronized) to CC, PL, 
MB
(not with MC 6x5x)
208
X501 HSCI output 2, only to MB or 
PLB 6001
(not with MC 6x5x)
208
X600 Reserved –
X249 HDL interface for visual 
display unit
329
X121 MC 6x4x: Profibus (option) 288
X125 SIK (System Identification 
Key)
–
X601 Reserved –
Protective ground –
Do not engage or disengage any connecting elements while the unit is 
under power!
X29
X27
X101
24V
  0V
X600 X249
X500
X501
X141
X142
X26
X144
X143 X116
X125
X601