Address; Interface Delay / Answer Delay; Key Lock - KPM PROCESS SENSORS METIS M311 Operating Manual

METIS M311 / M322 / H311 / H322 (12-pin device connector)

6.2.12 Address

In bus operation with RS485 a device address between 00 and 97 can be assigned (see
RS232 / RS485).
Device addresses from 00 to 97 are valid. Addresses 98 and 99 are with special functions. The global address
99 can be used to communicate with every controller, independent of the set device address. This allows com-
munication with devices with unknown addresses. The address 98 is a group address used for RS485 devices
in bus operation. With this address devices do not answer, useful to change parameters of all connected de-
vices at the same time.

6.2.12.1 Interface Delay / Answer Delay

During operation of the pyrometer via RS485, it may happen that the connection is not fast enough to detect
the response of pyrometer time to a command from the master, e.g. because the line is still busy with sending
before receiving. This sometimes occurs in older PCs or interface adapters or by slow switching times of inter-
face adapters and manifests itself in transmission errors of interface commands, so errors when parameters
are changed or of measured values transmission.
In this case, a delay for delaying the data transfer can be entered, the value specifies the main circulating time
and can be set from 00-20. The transmission of commands to the pyrometer is thus somewhat delayed, but it
can work with existing peripherals.

6.2.13 Key Lock

Changing the parameters (PAR key) on the device can be deactivated or protected by entering a 4-digit pin
(settings on the device (from firmware 2017_01), see
Settings and Configuration; only available at devices from firmware version 2016_18; update firmware see
section 8). If activated, this pin must be entered before parameters with the PAR button can be changed on the
device.
6.1 Key functions or via software, see 7.1.5, Device
4.1.5 Serial Interface
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