Trying to use an Arduino Uno to control two slaves with one master but its not working

Question

I am trying to use following code but its not working. Need a help in this regard.

#include <SimpleModbusMaster.h>
#define baudrate 115200
#define timeout 2000
#define polling 500
#define retry_count 5
#define Txenablepins 2
#define Led1 12
#define totalregs 9
enum{
  PACKET1,
  PACKET2,
  TOTAL_NO_OF_PACKETS
};
Packet packets[TOTAL_NO_OF_PACKETS];
packetPointer packet1 = &packets[PACKET1];
packetPointer packet2 = &packets[PACKET2];

unsigned int regs[9];
unsigned int write_regs[1];

void setup() {

    packet1->id = 1;
    packet1->function = PRESET_MULTIPLE_REGISTERS;
    packet1->address = 0;
    packet1->no_of_registers = 1;
    packet1->register_array = write_regs;
    
    packet2->id = 1;
    packet2->function = READ_HOLDING_REGISTERS;
    packet2->address = 0;
    packet2->no_of_registers = 1;
    packet2->register_array = regs;

modbus_configure(baudrate, timeout, polling, retry_count, Txenablepins, packets, TOTAL_NO_OF_PACKETS);
pinMode(Led1, OUTPUT);

}

void loop() {

unsigned int connection_status1 = modbus_update(&packets[PACKET1]);
unsigned int connection_status2 = modbus_update(&packets[PACKET2]);
if(connection_status1==1 and connection_status2==1){
digitalWrite(Led1, HIGH);
}
else{
digitalWrite(Led1, LOW);}
checkResponse();


}

This is my arduino slave code

#include <SimpleModbusSlave.h>

#define  ledPin  11 


enum {
    ADC0,
    ADC1,
    ADC2,
    ADC3,
    ADC4,
    ADC5,
    LED_STATE,
    BUTTON_STATE,
    TOTAL_ERRORS,
    TOTAL_REGS_SIZE
};

unsigned int holdingRegs[TOTAL_REGS_SIZE];

void setup() {
 // put your setup code here, to run once:
   modbus_configure(115200, 1, 2, TOTAL_REGS_SIZE, 0);
   
   pinMode(ledPin, OUTPUT);
   Serial.flush(); 
}

void loop() {
  // put your main code here, to run repeatedly:


  holdingRegs[TOTAL_ERRORS] = modbus_update(holdingRegs);
  
  int val = analogRead(ADC0);

  holdingRegs[0] = val;

  delayMicroseconds(50);


if(holdingRegs[0] == 1){
  digitalWrite(ledPin, HIGH);
}
else{
  digitalWrite(ledPin, LOW);
}




}

Using this library for modbus master and slave