Micromod MOD: 1731N ICN Mini-Link Users Guide - Manual (Page 18)

IB-23C003
INSTALLATION
2.4.2 ICN
ICN Isolation
The Mini Link is fitted with Opto-isolation components capable of providing a minimum of
3000 VDC electrical insulation between the Instrument Communication Network and the
PC/AT digital circuitry. This option is jumper-selectable by disabling the connection on
W23 (remove this jumper to enable optical isolation). If optical isolation is enabled, the
ICN connector must be fitted with a ground wire. This third wire should be secured to a
GROUND TERMINAL on the termination panel.
Mini Link ICN Device Address
Each device on a given Instrument Communication Network must be assigned a unique
address between 0 and 15. Normally, the Mini Link will be assigned an address of 0
(Factory Set) with the instruments starting at 1, 2, 3, etc. In the case where the factory-
set device address is not suitable, use SW1 to change the address for ICN0 and use
switch U1 .to change the address for ICN1.
ICN Baud Rate
The factory-set baud rate for instrument communication over the ICN is 31,250 bps. This
baud rate can be increased to 62,500 bps as follows:
ICN0
W13 Installed – Selects ICN0 Baud Rate of 62,500 bps
W14 Installed – Selects ICN0 Baud Rate of 31,250 bps
ICN1
J2 Installed – Selects ICN1 Baud Rate of 31,250 bps
J3 Installed – Selects ICN1 Baud Rate of 62,500 bps
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