AGFA PCR II Plus - Communication with Other Devices; Definitions of Communications Terms

Communication with Other Devices
The following list gives a brief overview of the procedure to set up your
PCR II Plus to communicate with the host computer and peripheral
devices.
1. Connect the communication cables. See the sections Connecting to
a GPIB Interface and Connecting to a SCSI Interface in this chapter.
2. Specify which communication protocol you are using. See the sec-
tion Changing Between SCSI and GPIB in this chapter.
3. Set the PCR II Plus internal terminator correctly. See the section In-
ternal Termination in this chapter.
4. Set the PCR II Plus device address correctly. See the section Setting
Device Addresses in this chapter.
Definitions of Communications Terms
PCR II Plus is a target device. This means that it is a destination for
both commands and image data that the host computer sends to it.
The PCR II Plus connected to the host computer form a chain. This is
a series of devices linked together with communication cables. Chains
may include external hard drives, CD ROM readers, etc. This series of
linked devices may also be referred to as a daisy chain, or, if the sys-
tem uses SCSI communication, a SCSI chain.
There are two different communication protocols that the PCR II Plus
can use:
1. GPIB—General Purpose Interface Bus; also known as IEEE 488-
1978 interface.
2. SCSI—Small Computer Systems Interface.
Both are widely recognized data communications interfaces for high-
speed transmission of data from one device to another.
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