102 GE INFORMATION D20MX HARDWARE USER’S MANUAL
APPENDIX C: FREQUENTLY ASKED QUESTIONS
Q: Why does the D20MX use the Vxworks Operating System instead of PSOS?
A: Vxworks is designed for mission critical systems. It is purpose-fit, extremely robust
and fast. It is industry-focused and designed to work with real-time operating
systems. It is the new operating system of choice for numerous embedded systems
that require a high level of robustness.
A: Embedded systems manufacturers are moving away from the PSOS operating
system since on-going support for this operating system is very limited.
Q: Is the D20MX hardware backward compatible?
A: The D20MX hardware is compatible with the I/O modules installed in the field.
A: Due to aging printed circuit board assembly and mechanical constraints, only certain
chassis from 2002 and onward can be used with a D20MX. This comprises the
following chassis:
– D20 VME chassis 500-0280 Release 08 or higher
For the VME chassis 500-0280, the zero volt cable supplied with the D20MX KIT,
must be connected from the zero volt TB2 terminal block on the 517-0225 to zero
volt on the 517-0123. Review the hardware manual for the steps involved. Part
number for the zero volt wire cable is 975-1237.
– D20 Non-VME chassis 500-0305 Release 18 or higher
Q: Are the PCOMMON versions compatible with the D20MX?
A: The following PCOMMON versions are compatible with the D20MX:
– -P022 v3.0x5 and 3.00: PCOMMON for D20C
– -P010 v3.0x6, 3.05, 3.01 and 3.00: PCOMMON for D20A, D20S and D20K
– -P087 v1.04, 1.03 and 1.02: pBOOT for D20AC
Also see the PCOMMON versions compatible with the D20MX in Table 9 on page 23.
Q: What is the recommended operating temperature range of the D20MX?
A: The operating temperature range is 0°C to +70°C.
Note: Do not operate the D20MX above 60°C for extended periods of time as this
shortens the life of the super capacitor and reduces the backup time of the real time
clock.
Q: What software application is used to configure a D20MX configuration?
A: The SGConfig (version 7.2 or higher) offline configuration tool is used to configure the
D20MX. SGConfig is similar to ConfigPro which is used to program its predecessor.
Q: Can you migrate an old D20/D200 configuration to D20MX?
A: ConfigPro is partly used to get the D20 device configuration ready for migration into
the SGConfig tool.
A: It is recommended to migrate a project rather than a device to prevent partial loss of
configuration data related to Ethernet/LAN.
A: For detailed migration steps, see section “Transfer D20/D200 configurations to the
D20MX” on page 70.
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