Jesco TOPAX L1, Инструкция по эксплуатации и техническому обслуживанию

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Operation and Maintenance | Operation & Maintenance Instructions TOPAX L1/L4/L5 |
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through the composition of jumpers (see chapter 2.4 and 2.5).
If the connector converters with order no. 44300101 (RS 232 to RS 485) or no. 44300102
(USB to RS 485) are attached to the PC, the cut-off resistance of the PC’s sides is already
activated.
Pull-up/pull-down resistance.
The data line has to be set at a fixed potential. A cut-off of the cable with Pull-up/Pull-
down resistances is fundamentally necessary for the RS485-connections, in the times, in
which the data sender is active, in order to exact the quiescent level on the bus system.
Without this measure it is not possible to transfer data.
To activate all resistances jumpers have to be attached to the TOPAX DE (see following
illustration). For this purpose the device front has to be unscrewed and flipped up.
CAUTION!
It is not at all possible to install resistances for Pull-up/Pull-down on a TOPAX
L/LF. (However, the resistances for Pull-up/Pull-down can be activated on a
TOPAX DE or TOPAX DX).
To guarantee the transfer of data with only TOPAX L/LF devices and/or with a TOPAX L/LF
to the network end, one must install an additional bus terminal (order no. 41900001) to
the PC. The Pull-up/Pull-down resistances are inserted into it.
TopView
To visualize the data read out in the network we offer the application TopView 2.0 in two
versions: Standard and Mini. The programme “TopView 2.0 Standard” has the order no.
78349. The Software “TopView 2.0 Mini” is free to download from the manufacturer’s
website.
WARNING!
CAUTION!
NOTE!