SATEC SLC500 - Manual (Page 4)

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1 ABOUT THE COMMUNICATION DRIVER
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The driver provides data exchange between SLC 5/02, 5/03 and 5/04 modular controllers, and
SATEC Powermeters via the 1746-BAS BASIC module.
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The EPROM firmware versions can be supplied for 1 to 31 instruments. Three data sets and
three baud rates (1200, 2400 and 9600 baud) are available upon order. For available data sets,
refer to Appendix A.
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The driver supports all models of SATEC Powermeters, although certain parameters might
not be relevant to some models, and in this case will be transmitted as zeroes.
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The time required for polling one instrument and processing the acquired data until the data
transfer to the SLC CPU occurs is 5 to 7 seconds, depending on the model of the instrument
being polled.
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The instruments are connected to the BASIC module's PRT2 port that is configured as ASCII
interface port. The PRT2 port can be configured for RS-422, RS-485 or RS-232
communication. When using RS-232 interface, only one Powermeter may be connected to the
BASIC module. With RS-422/RS-485 communications, up to 31 instruments can be connected to
the BASIC module in multidrop mode.