Installing System Expansions and Connecting Peripheral Devices
4-2
Operating Instructions PG 740 PIII
A5E00063150-03
4.2
Memory Expansions
Installing DIMM cards
Plug the DIMM memory cards in as follows:
1. First open the unit as described in Chapter 4 of the manual PG 740 PIII
Programming Device. The manual is contained in electronic format on the CD
“Backup PG720/740” shipped with the PG.
!
Caution
Risk of damage!
Note that only qualified personnel should be allowed to work on the open unit, so
the warranty on the device is not affected. Authorized Siemens maintenance and
repair centers offer you a specialist maintenance service. Contact the SIMATIC
Customer Support Hotline for their addresses.
2. Plug the cards in vertically, making sure the cut-out on the connector end of the
DIMM card engages properly.
3. Press the card lightly and tilt it downwards until it locks into place.
!
Caution
Risk of damage!
The cards must be plugged in tightly, otherwise they may be damaged.
Installing ISA Modules and PCMCIA Cards
Note the following when installing these cards:
Note
Depending on the configuration of the PG 740 PIII, there may not be any free
interrupts available for operating ISA modules or PCMCIA cards. In this case, you
must reserve interrupts in the setup.
To reserve the interrupts, proceed as follows:
In the BIOS setup menu “Advanced,” set the interrupt required by the PCMCIA
card or ISA module to “reserved” for “PCI/PNP ISA IRQ Resource Exclusion” in
the line “PCI Configuration” (the default setting is “available”).
For more information on how to work with ISA Modules and PCMCIA Cards please
refer to chapter 3.8.
