# Configuration

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## 1. Station Number

The parameter "Station number" is used to distinguish between stations on the CC-Link network. Unique station numbers in consecutive order without duplication must be used, when assigning stations to the CC-Link network. The allowed range is from 1 to 64. "Station number" can be set via CPA as it is shown on the snapshot:

## 2. Transmission speed

"Transmission speed" for all stations on the CC-Link bus including the master station needs to be the same. If the settings for at least one station is different, the data link cannot be established normally.

The transmission rate can be selected to be 156 kbps, 625 kbps, 2.5 Mbps, 5 Mbps or 10 Mbps. It can be configured via CPA as it is shown on the snapshot:

## 3. Number of occupied stations

This parameters represents the number of stations (occupying one stations worth of memory area) used by a single slave station in a network. It is one of the two parameters that define operational settings. In case of VAT controllers, it is always paired with parameter "extended cyclic setting" in the following way.

Number of occupied stations: 1 & Extended cyclic setting: Octuple

Number of occupied stations: 4 & Extended cyclic seting: Double

The VAT slave supports only these two combinations of the CC-Link parameter settings.
It can be configured via CPA as it is shown on the snapshot:

## 4. Extended cyclic setting

This is the extended cyclic transmission. The extended cyclic points can be set as 2 times, 4 times or 8 times of the normal cyclic transmission points. In case of VAT controllers, it is always paired with "Number of occupied station" in the following way.

Number of occupied stations: 1 & Extended cyclic setting: Octuple

Number of occupied stations: 4 & Extended cyclic seting: Double

The VAT slave supports only these two combinations of the CC-Link parameter settings.

It can be configured via CPA as it is shown on the snapshot:

## 5. Data Type of Pressure and Position values

The data type of different pressure and position values can be optionally changed between 32-bit signed integer and 32-bit floating point (IEEE-754 standard).

They are all set to the floating point type by default. The data type can be set via CPA for each of the 12 parameters separately:

## 6. Range of Pressure and Position values

The range of all listed pressure and position values can be adjusted. That means, for example, that the valve position values for “CLOSE” and “OPEN” can be set to other ones then the default values 0 and 100’000.

|  | Default range limits
# | Parameter name | Min | Max
Inputs
1 | Pressure | 0 | 1’000´000
2 | Pressure Sensor 1 | 0 | 1’000’000
3 | Pressure Sensor 2 | 0 | 1’000’000
4 | Position | 0 | 100’000
5 | Target Position | 0 | 100’000
6 | Cluster Valve Position | 0 | 100’000
Outputs |
7 | Pressure Setpoint | 0 | 1’000’000
8 | Position Setpoint | 0 | 100’000
9 | Pressure Alignment Setpoint | 0 | 1’000’000
10 | External Digital Pressure Sensor 1 | 0 | 1’000’000
11 | External Digital Pressure Sensor 2 | 0 | 1’000’000
12 | Cluster Valve Freeze Position Setpoint | 0 | 100’000

The range of pressure and position values can be configured via CPA for each of the 12 parameters separately:

The range of pressure and position values is independent of the data type (signed integer and floating point). The internal accuracy of valve is for all positions is the precision of IEEE-754 Floating point number. If the range of pressure and position values is rising, the accuracy of pressure and position does not rise. This is only scaling that doesn't improve internal accuracy of values.