G&L MMC-A2, Hardware Manual

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Standalone MMC Control
G & L Motion Control Inc. MMC Hardware Manual 85
4.9 Replacing the MMC Battery
Follow the procedure below to replace the MMC battery when the “P” light is
flashing.
1. After DC power has been applied to the MMC for at least five minutes, turn off
power. This ensures that the contents of memory will not be lost while the
battery is removed. Disconnect the input power connector from the MMC.
2. Remove the MMC (including any optional modules) from the cabinet.
3. Use a static-free work surface if possible. Ground yourself using a properly
grounded wrist strap before you open the case. These are standard precautions
before handling any electronics component.
4. Lay the MMC system on the work surface. If there are no optional modules
attached, remove the cover by removing the five screws, two on top, two on the
bottom, and one on the right side of the MMC.
Table 4-37: SERCOS Loader Port to PC Cable
Part Number:
M.1302.8250
Length:
4 M (13 ft)
Cable type: 24 AWG, shielded, twisted pair, 4 conductor.
9-Pin female D-sub
(to SERCOS Loader
Port, face view)
9-Pin female D-sub
(to PC COM Port,
face view)
Pin Signal Pin Signal Notes
2 Receive Data 3 Transmit Data Twisted
3 Transmit Data 2 Receive Data Pair
5 Signal Ground 5 Signal Ground
Shell Drain Shell Drain
6
5
9
1
6
5
9
1