Pgm Iota Pinouts - Honeywell Experion PKS User Manual

4 PROFIBUS GATEWAY MODULE (PGM) INSTALLATION

4.3 PGM IOTA pinouts

The following figure illustrates the pinout diagram of the PGM/IOTA DB9-F connector.
The following table lists the PROFIBUS DB9-F Pin and signal definitions.
Pin Number
Shell
1
2
3
4
5
6
7
8
9
Note
Only the signals shown in the above figure and table are available for PGM. Others are not connected.
The metallic shell shall be used as the primary shield and protective ground connection as it provides the best EMI
mitigation.
Pin 1 is provided for compatibility with older systems that use this pin as a shield connection point.
* VP (+5V) and DGND are primarily used for external bus termination. Some devices such as electrical to fiber
optic repeaters might require external power from these pins (not to exceed 35 mA). CNTR-P (repeater control) is
used in some equipment to determine the direction of transmission/reception.
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Signal
Shield
Shield
--
RxD/TxD-P
CNTR-P
DGND
VP
--
RxD/TxD-N
--
Description
Shield, Protective Ground
Shield, Protective Ground (not recommended – see note)
Not Connected
Receive/Transmit data – plus (B wire, red color)
Repeater control signal (direction control), RTS signal
Data ground (reference potential for VP) *
Voltage - plus (P5V), +5V *
Not Connected
Receive/Transmit data – minus (A wire, green color)
Not Connected