User`s manual

Maxiflex T2 CPU User Manual 12 -© Omniflex
UMM124XBR04.pdf
2.3 Connecting the Programming port (all models):
Connect the T2 CPU to a standard PC compatible serial port using the OMINFLEX supplied
standard programming cable (Part Number M1831A supplied separately).
If another cable is to be used, the following connections will apply:
Signal Name DB-9 FCC-68 Pin No.
Rx Data from T2 2 4
Tx Data to T2 3 1
Ground Reference 5 2
All other pins are reserved and must not be connected.
Table 2.1: Pin allocation of DB-9 connector on program cable and FCC-68 socket on M124xA
2.4 Connecting the Serial port (all models):
The selection of either RS232 or RS485 is accomplished by specific wiring of the serial port
connector. No internal links need be changed to select between RS232 and RS422/485.
NOTE: The pinout of the T2 CPU differs from the previous models of Maxiflex CPU’s. When
upgrading from a previous model please ensure that the correct serial port wiring is used.
Communication Standard Pin
number
RS232 RS485
1 Do not connect Rx Data + (In)
2 Rx Data (In) Rx Data – (In)
3 Tx Data (Out) Do not connect
4 Do not connect Tx Data+ (Out)
5 Ground Ground
6 Do not connect Vcc
7 RTS (Out) Do not connect
8 CTS (In) Do not connect
9 Do not connect Tx Data – (Out)
Table 2.2: Pin allocation of serial port connector on M124xA CPU.
NOTE: The RTS and CTS handshaking lines are available for applications that require it. It is not
a requirement of the CPU to use handshaking. In most applications connecting handshaking lines
is not required.
2.5 Connecting the Conet/c network port (M1241B CPU only):
The CPU should be connected to network using the C6169 Conet Termination Board and
interconnecting cable.