16
Peer alltime
To reduce network traffic during normal peer-to-peer operation, only those peer variables that
changed are sent to the other nodes. However, the processor periodically sends all of its peer
variables to the other nodes. The peer_alltime parameter specifies
how often these “all peer
variable” transfers occur (Valid range: 0 to 2147483647 in 10-millisecond increments – Default
value: 6000 every 60 seconds).
Ip route
The IP route parameter is required if the node must respond to communications from a
host located on another network. If all the nodes and hosts reside on the same network, this
parameter is not required and should be left at its default value.
The format of an IP route is composed of three elements, each separated by a space as follows:
destination mask gateway
. The format of each of the three elements is
nnn.nnn.nnn.nnn
, where
nnn
is a number from 0 to 255. Up to five IP routes may be entered in
this parameter, each separated from the other by a space. There are three types of IP routes that
may be added in this parameter: host routes, network routes, and a default route. The routes
specify networks (
destination
AND
mask
) that must be different than the one containing the RTP
target node as specified in the
ipaddress
parameter. Be careful not to enter the
ipaddress
into the
ip route
parameter
The default route is the simplest means to access a host on another network. It takes the
form:
0.0.0.0 0.0.0.0 gateway
, where
gateway
is IP address of the gateway computer, or
router, that connects the target node’s network to the network where the host resides.
(The destination and mask must be 0.0.0.0.) Note that only one default route is allowed in the IP
route parameter. Example: 0.0.0.0 0.0.0.0 10.100.100.65 triplet entry in the ip route parameter to
reach all other networks. In this example, the gateway 10.100.100.65 is in the same network as
the RTP target node, as specified in ipaddress parameter (e.g. 10.10.10.64).
A host route defines one specific host on another network. It takes the form:
destination
255.255.255.255 gateway
, where
destination
is the IP address of the host and
gateway
is the IP
address of the gateway computer connecting the two networks. (The mask must be
255.255.255.255.)
A network route specifies a route to a subnet of hosts which is a route that will match multiple IP
addresses. It takes the form:
destination mask gateway
, where
destination
is the IP address of the
host,
mask
is a subnet mask that masks all but the intended range of addresses, and
gateway
is
the IP address of the gateway computer connecting the two networks. For example, the network
route 192.200.100.0 255.255.255.0
gateway
would provide valid routes to all hosts with IP
addresses between 192.200.100.1 and
192.200.100.255 on the network connected by the gateway, or router, defined by gateway.
The
gateway
, or router, must have an IP address (
gateway
) that is within the same network as
specified in the
ipaddress
configuration parameter.
Note
: Do not change the ip_route parameter for communications in Safety Instrumented Systems.
Safety-critical communication messages (e.g. peer-to-peer messages) should not be routed.
Maxpgm
The maxpgm parameter specifies the maximum amount of memory (in bytes) allocated for the
project program. The default value is 1,843,712 bytes (Valid range: 307,712 to 4,096,512). In
RTP3000M and RTP3100M, the default value is 1,048,576 bytes (Valid range: 307,712 to
1,048,576). You must allocate sufficient memory for the project program. If the project program
is too large, an error message is generated during the attempted download.
