9.1.3 Specifications
Item
PSCA Specification
Channels
6 independently configured serial Modbus Master channels
1 Ethernet Modbus Master channel (with Simplex IONet configuration)
Communication Choices
RS-232 mode
RS-422 mode
RS-485 mode, half-duplex only
Ethernet Modbus mode
RS-232 Mode
Cable distance: 15 m (50 ft)
Communication Rate: up to 115.2 kbps
RS-422 Mode
Cable distance: 305 m (1000 ft)
Communication Rate: up to 115.2 kbps
Number of drops: 8
RS-485 Mode
Cable distance: 305 m (1000 ft)
Communication Rate: up to 375 kbps
Size
8.26 cm high x 4.19 cm wide x 12.1 cm deep (3.25 in x 1.65 in x 4.78 in)
Technology
Surface-mount
Ambient Rating for Enclosure
Design
-40 to 70ºC (-40 to 158 ºF)
Note For further details, refer to the Mark VIe Modbus Master Communication Module Summary Sheet (GEI-100868).
9.1.4 Diagnostics
The I/O pack performs the following self-diagnostic tests:
• A power-up self-test that includes checks of RAM, flash memory, Ethernet ports, and most of the processor board
hardware
• Continuous monitoring of the internal power supplies for correct operation
• A check of the electronic ID information from the terminal board, acquisition board, and processor board to confirm that
the hardware set matches, followed by a check that the application code loaded from flash memory is correct for the
hardware set
• Analog inputs such as pressure and position have system limit checking based on configurable high and low levels. These
limits can be used to generate alarms, to enable/disable, and as latching/non-latching. RESET_SYS reset the out of limits
Details of the individual diagnostics are available from the ToolboxST application. The diagnostic signals can be individually
latched, and then reset with the RESET_DIA signal if they go healthy.
290 GEH-6855_Vol_II GEH-6855_Vol_II Mark VIeS Functional Safety Systems Volume II
Public Information
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