Micromod Micro-DCI: 53MC5000 MicroLink - Manual (Page 22)

8.0 CONFIGURING THE 53MC5000 PCS AS A GATEWAY
This section contains information to interconnect a MicroLink and Datalink network via a
53MC5000 PCS configured as a gateway. It includes gateway overview information, and
53MC5000 PCS parameter entries for gateway functionality. It also includes parameter entries for
the MicroLink SUPERVISOR-PC unit, External Input Module task entries for the 53MC5000 PCS
modules on the MicroLink, parameter entries for the Datalink SUPERVISOR-PC unit, and cabling
information.
8.1 53MC5000 PCS GATEWAY OVERVIEW
Prerequisites are a 53MC5000 PCS with Expansion Ready Capabilities (see sub-section 4.1.1)
that has Extended Functionality, Enhanced Version Revision 2 Firmware, and MicroLink Revision 2
Firmware.
Gateway capabilities are in addition to 53MC5000 PCS standard operation. The gateway can oper-
ate in Datalink interrogator mode or in Datalink responder mode.
In Datalink interrogator mode, the gateway functions as the sole host on the Datalink network.
Nodes on the MicroLink network transact with Datalink instruments via the gateway which initiates
the interrogator/responder sequence. The Datalink nodes are passive and can not initiate peer-to-
peer network transactions but respond to queries from the gateway. Gateway functionality is trans-
parent to the MicroLink nodes, as the Datalink instruments appear to be installed on the MicroLink
network.
In Datalink responder mode, the gateway functions to connect Datalink SUPERVISOR-PC unit or
other host devices’ queries to MicroLink network nodes. The MicroLink network nodes can not initi-
ate peer-to-peer transactions with Datalink nodes. This capability is still functional on the Mi-
croLink network, as peer-to-peer transactions are not affected by the presence of a gateway on the
MicroLink network.
Every device on the combined Datalink/MicroLink network has a unique address, and only a single
gateway can be connected to the same Datalink and MicroLink networks. (See Figures 8-1 and 8-
2 for basic illustrations of gateway interrogator and responder network configurations.)
Interconnecting MicroLink and Datalink networks via a gateway requires setting parameters in
either the MicroLink SUPERVISOR-PC unit(s) (gateway as Datalink interrogator) or Datalink SU-
PERVISOR-PC unit (gateway as Datalink responder), and the gateway. Also, the gateway must be
cabled to physically connect both networks.
Section 8. Configuring the 53MC5000 PCS as a Gateway
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