Document reference MAMPS-HW/E HARDWARE MANUAL
Edition 18 - March 2022 VM600 machinery protection system (MPS)
13 - 5
Configuring A and B serial communications
CONFIGURATION OF CPUM / IOCN CARDS
NOTE: In Figure 13-5 and Figure 13-6:
• _x refers to _A or _B. For example, J28_x refers to J28_A used to help configure
group ‘A’ communications and refers to J28_B used to help configure group ‘B’
communications.
• J28_x and J29_x are used to enable/select RS-485 communications for group ‘A’
or group ‘B’, as required.
Figure 13-5: Serial communications module (PNR 200-595-510-110) jumper settings to
select half-duplex RS-485 for later versions of the CPUM card (PFM-541I)
J29_x J28_x
J35_x
J36_x
J37_x
J38_x
J31_x
J32_x
J33_x
J34_x
Note:
Set if terminations
are needed.
Figure 13-6: Serial communications module (PNR 200-595-510-110) jumper settings to
select full-duplex RS-485 for later versions of the CPUM card (PFM-541I)
J29_x J28_x
J35_x
J36_x
J37_x
J38_x
J31_x
J32_x
J33_x
J34_x
Note:
Set if terminations
are needed.
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